Class 6

Balbharti Maharashtra State Board Class 6 English Solutions Chapter 1.2 Who’s the Greatest? Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 English Solutions Chapter 1.2 Who’s the Greatest?

Class 6 English Chapter 1.2 Who’s the Greatest? Textbook Questions and Answers

1. Listen to the stories carefully, as your teacher reads them aloud. Note down the new words, ideas or concepts. Discuss them in the class.

Question 1.
Listen to the stories carefully, as your teacher reads them aloud. Note down the new words, ideas or concepts. Discuss them in the class.

2. Guess the meaning of the following words and phrases:
untold wealth, closest to the Emperor’s heart, grave offence, banish.

Question 1.
Guess the meaning of the following words and phrases:
untold wealth, closest to the Emperor’s heart, grave offence, banish.
Answer:

1. untold wealth: limitless wealth, the magnitude of which is not revealed
2. closest to the Emperor’s heart: dear to the Emperor
3. grave offence: serious mistake
4. banish: send away into exile

3. Say with reasons, whether the following statements are true or false.

Question a.
Akbar wanted to punish the person who pulled his moustache.
Answer:
False. Akbar did tell his courtiers that someone had pulled his moustache. But it was his grandson who had lovingly pulled his moustache and Akbar did not have any intention of punishing him.

Question b.
Akbar thought he was greater than God.
Answer:
False. Akbar did not think so. It was his courtiers who said so in an attempt to praise him for receiving favours.

Question c.
Birbal thought Akbar was greater than God.
Answer:
True. Birbal thought Akbar was greater than God but only at one aspect. Unlike Akbar, God’s kingdom extended everywhere so the Almighty God could not banish anyone from his kingdom.

4. Write a sentence about three of your friends. Each time you should say what your friend cannot do, and yet, pay a compliment to your friend.

Question 1.
Write a sentence about three of your friends. Each time you should say what your friend cannot do, and yet, pay a compliment to your friend.
Answer:

• My friend Raj cannot say no to others as he does not like to hurt others.
• My friend Radha cannot hurt animals as she is concerned about their welfare.
• My friend Sai cannot be rude to others because he is extremely loving and polite.

5. Write a short note on Emperor Akbar.

Question 1.
Write a short note on Emperor Akbar.
Answer:
Emperor Akbar or Akbar the Great is known as one of the greatest rulers in the world – not just because he had a vast empire, a very strong army, untold wealth but because he was a good human being. He cared for his subjects. He had great respect for scholars, writers, poets and artists belonging to different religions. He was a patron of art and culture. The nine gems or ‘nav-ratnas’ in his court were famous which included Birbal who was known for his wit and humour. He was the one who was very dear to Akbar.

6. Convert the stories into dialogues and read the dialogues aloud in the class.

Question 1.
Convert the stories into dialogues and read the dialogues aloud in the class.
(One is done for you.)
Answer:

• Emperor Akbar: (With a serious expression.)
  I have a question for all of you. What should be the punishment for someone who pulls my moustache?
• One Nobleman: Flog him! Give him fifty lashes of the whip.
• Second Nobleman: That’s not enough. Put him in jail without food and water.
• Third Nobleman: Whip him! Beat him up! Fourth Nobleman: Hang him!
• Fifth Nobleman: Cut off his offending hands.
• Akbar: What do you say Birbal?
  What is your opinion?
• Birbal: In my opinion, given of peace to the world, the offender should be given his favourite sweetmeats.
• Courtiers: Raja Birbal, are you out of your mind? Give sweetmeats for such a grave offence?
• Birbal: Yes, who would be so bold as to pull the Emperor’s moustache? Only his own grandson!
  (Akbar burst out laughing as it was exactly what had happened in the morning.)

7. Form pairs and make a ‘pair presentation’ of any one of the two stories. To do so, each person presents only one sentence at a time, and the next one is immediately presented by the partner. Thus, each person in the pair presents alternate sentences without breaking the flow of the narration.

8. Find at least five other Akbar and Birbal stories and share them with your friends. Make a list of the stories collected by the entire class. Write your list in alphabetical order.

9. Visit a library. Find the stories of:

• Mulla Nasiruddin
• Gopal Bhand
• Tenali Raman

Share them in the class.

Class 6 English Chapter 1.2 Who’s the Greatest? Additional Important Questions and Answers

Answer in one sentence.

Question 1.
Why is Emperor Akbar or Akbar the Great known as one of the greatest rulers in the world?
Answer:
Emperor Akbar or Akbar the Great is known as one of the greatest rulers in the world, not just because he had a vast empire, a very strong army, untold wealth, but because he was a good human being.

Question 2.
Give two examples to show that Akbar was an ideal ruler.
Answer:

1. Akbar cared for his subjects.
2. He had great respect for scholars, writers, poets and artists belonging to different religions.

Question 3.
Who did Akbar have great respect for?
Answer:
Akbar had great respect for scholars, writers, poets and artists belonging to different religious.

Question 4.
Which question posed by Akbar stunned the Emperor’s court? Why?
Answer:
The question, “What should be the punishment for someone who pulls my moustache?” stunned Akbar’s court as it was unheard of.

Question 5.
Write any one punishment suggested by any one nobleman.
Answer:
One nobleman suggested that the person who pulled the Emperor’s moustache should be flogged with fifty lashes of the whip.

Question 6.
What was Birbal’s suggestion regarding punishing the offender?
Answer:
Birbal suggested that the offender should be given his favourite sweetmeats.

Question 7.
What explanation did Birbal offer for his choice of punishment?
Answer:
Birbal explained that only his own grandson would be so bold to pull the Emperor’s moustache and so giving his favourite sweetmeats would be the best punishment.

Question 8.
Why did the courtiers compete with each other in praising Akbar?
Answer:
The courtiers competed with each other in praising Akbar as they wanted to get some favours from him.

Question 9.
What dilemma did the courtiers face?
Answer:
When the courtiers praised Akbar and said that he was greater than God Almighty, Akbar asked them to prove it or face punishment.

Question 10.
What was the one thing according to Birbal which Akbar could do but God Almighty could not?
Answer:
According to Birbal when Akbar wanted to punish someone, he could banish that person out of his kingdom, but as God’s kingdom extended everywhere, the Almighty couldn’t banish anyone from his kingdom.

Reading Skills, Vocabulary and Grammar

Read the following extract and complete the activities that follow.

Question 1.
State whether the following statements are true or false.
a. Akbar was happy to hear the praises from his courtiers.
b. Akbar was angry with Birbal’s response.
Answer:
a. False
b. False

Question 2.
What information did Akbar want?
Answer:
Akbar wanted to know if the courtiers had found an answer to his question.

Question 3.
Why could God not banish anyone from his kingdom?
Answer:
God couldn’t banish anyone from his kingdom because God’s kingdom extended everywhere.

Question 4.
Why did Akbar’s face lighten up with a smile?
Answer:
Akbar’s face lightened up with a smile because Birbal had given a clever reply.

Question 5.
Why did Akbar forgive the courtiers for their stupidity?
Answer:
Akbar was so pleased with the answer given by Birbal that he forgave the courtiers for their stupidity.

Question 6.
Find the odd word:
look, royal, good, proper
Answer:
look, The rest are adjectives.

Question 7.
Complete the analogy:
Answer:
prove: proof: punish: punishment

Question 8.
Everyone was curious to see what would happen next. (State the word class of the underlined word.)
Answer:
next: adverb

Question 9.
The Almighty cannot banish anyone from his kingdom. (Add a question tag)
Answer:
The Almighty cannot banish anyone from his kingdom, can he?

Question 10.
Do you believe in false praise? Elaborate.
Answer:
No, I don’t. Appreciating people for their good qualities is a good thing but resorting to false praise for receiving favours or for some ulterior motive is definitely something which we should refrain from.

Language Study

Do as directed.

Question 1.
You are the greatest of the kings. (Underline the adjective)
Answer:
greatest.

Question 2.
Put him in jail without food and water. (State the types of nouns)
Answer:
food, water – Material noun.

Question 3.
He was an patron of art and culture. (Correct the article)
Answer:
He was a patron of art and culture.

Question 4.
I believe you. ( Begin the sentence with ‘you are )
Answer:
You are believed (by me).

Question 5.
Flag him ! (State the type of sentence)
Answer:
Exclamatory sentence.

Question 6.
Akbar looked at Birbal thoughtfully (State the part of speech of the underlined word)
Answer:
thoughtfully – Adverb.

Make sentences using the following phrases.

1. to have respect: I have great respect for my teachers who are my friends and my guide.
2. to come up with: He came up with the most silly excuse.
3. to be stunned: The whole world was stunned by the news .
4. to offer an explanation: He realised his mistake and offered an explanation for them.
5. to have an advantage: The other team in the game had an advantage because they were highly experienced.

Complete the following table.

Give the antonyms by providing appropriate suffixes.

1. interesting × uninteresting
2. human × inhuman
3. pleased × displeased
4. advantage × disadvantage
5. proper × improper

Give one word for:

1. very great in area or size: vast
2. to beat someone hard with a whip: flog
3. to be disturbed: agitated
4. lack of cleverness: stupidity

Did you Know?

Birbal stories are very famous and popular in India among all ages of people. They are also known as Akbar-Birbal stories. Akbar, the Great, the Mughal Emperor in India, ruled from 1560 to 1605. He himself was illeterate but he invited several learned people in his court. Among these, nine people were very famous and were known as Nav-ratnas. Birbal was the favourite of Akbar, because of his wisdom, wit and subtle humour.

Who’s the Greatest? Summary in English

Who’s the Greatest? is an interesting lesson which narrates two of the very popular Akbar and Birbal stories. Akbar would always pose interesting questions and problems in his court and Birbal, one of his nine gems or ‘nav-ratnas’ never failed to come up with an answer displaying his wit and humour.

In this lesson, one of the stories talks about Akbar’s question to his courtiers:
“What should be the punishment for someone who pulls my moustache?”
While everyone called for strict actions for the grave offence, Birbal smilingly suggested that Akbar should give the offender his favourite sweetmeats. After all he said, who would be so bold to pull the Emperor’s moustache other than his own grandson?
The next story is about the challenge Akbar posed to his courtiers who showered him with false praises and called him greater than the God Almighty.
He told the courtiers to tell him atleast one thing he could do but God Almighty would not be able to do.
Here Birbal came to the courtier’s rescue. He said:
“When you want to punish someone, you can banish that person – you can throw him out of your kingdom. But God’s kingdom extends everywhere. The Almighty cannot banish anyone from his kingdom.” Akbar was pleased with the answer.
The humour and wit in the Akbar and Birbal stories are the reasons for their popularity.

Introduction:

‘Who’s the Greatest’ narrates Akbar and Birbal’s stories which reflect Birbal’s wit, humour and intelligence.

Glossary:

1. vast (adj) – very great in area or size
2. empire (n) – a large area ruled by an emperor or supreme authority
3. scholars (n) – learned persons
4. patrons (n) – a person supporting something. Here it is art and culture
5. pose (v) – present a question
6. generations (n) – all the people born in the same period
7. agitated (adj) – angry, disturbed.
8. courtiers (n) – attendants at the court
9. offender (n) – one who commits an illegal act
10. opportunity (n) – circumstances which ensure that something can be done
11. displeasure (n) – annoyance
12. banish (v) – send away into exile
13. advantage (n) – something which provides one a favourable position

Balbharti Maharashtra State Board Class 6 English Solutions Chapter 1.5 A Kabaddi Match Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 English Solutions Chapter 1.5 A Kabaddi Match

Class 6 English Chapter 1.5 A Kabaddi Match Textbook Questions and Answers

1. Form pairs. Make a list of as many games as you can. (At least 25) Then classify the games using the following criteria:

• indoor and outdoor games.
• Games played with and without any equipment.
• Games which have one-to-one matches and those in which teams play against each other (Single player or team)
• Games played mostly by children and games played by adult players.
• Shape and size of the court or field.
• Use the following figures to show your classification.

Question 1.
indoor and outdoor games.
Answer:

Question 2.
Games played with and without any equipment.
Answer:

Question 3.
Games which have one-to-one matches and those in which teams play against each other (Single player or team)
Answer:

Question 4.
Games played mostly by children and games played by adult players.
Answer:

Question 5.
Shape and size of the court or field.
Answer:

2. Read the description of the Kabaddi match and do the following:

Question a.
Note down the names of the players and say whether each one belongs to 9A or 9B.
Answer:

Question b.
Describe, in your own words, the important events in the first half.
Answer:
With the spectators clapping and boosting the morale of both the teams, the match got off to a good start. Having won the toss 9A sent their raider, Govind. Catching the opponent unawares, he touched Suresh from 9B and in no time headed towards home thus scoring a point.

Ravi being a strong player, with the knowledge of the right techniques appeared relaxed as he was aware of his strengths. Mangesh was wrestled down by Ravi and his friend, but Mangesh proved his capability. Even as he was on the ground with the anti¬raiders catching hold of his waist and legs, he slowly inched towards his court.

The best efforts of the anti-raiders failed in pulling him back and Mangesh successfully touched the mid-line scoring three points and getting three players of the anti-raiders out from the game.

Now, 9B began to play by exercising caution. Mihir and one of their raider tasted early success as they managed to tag Sohan in 9A. The other few raids were futile. Now, it was the turn of Vivek, the strategist. The remaining three players from 9B trapped Vivek. He slowly made his way back towards his court with the anti-raiders moving with him.

When they caught Vivek’s arm and tried to pull him back, Vivek slipped his leg beyond the midline with the anti-raiders still hanging onto his arm. Thanks to Vivek’s efforts, the whole of 9B was declared out.

Question c.
Write in your own words, what happened in the second half.
Answer:
The half time break was over, the star players of 9A were brimming with confidence. They did an encore by catching hold of ace raiders Mohan, Ajinkya and Ravi. As they say, the best team wins. Since 9A displayed excellence in all areas of the game, they emerged the winners. This coupled with team spirit, their confidence, strategies, swiftness and suppleness helped them emerge the winners beating 9B – a team which had never been defeated in any game of Kabaddi.

Question d.
Choose any one event and draw a diagram to show what happened.

3. List all the words specially used in the game of Kabaddi.

4. From the internet or other sources, find the other names by which Kubaddi is known in different parts of our country and the world.

Question 1.
From the internet or other sources, find the other names by which Kubaddi is known in different parts of our country and the world.

5. What characteristics are needed to be a good player of Kabaddi? What should you do to develop each? Discuss this in groups of 5 and write a composition on it.

Question 1.
What characteristics are needed to be a good player of Kabaddi? What should you do to develop each? Discuss this in groups of 5 and write a composition on it.

6. Read the following note from a school girl’s diary:

Write diary entries for the interesting or important events that take place in your school. Write at least 3 entries.

Question 1.
Write diary entries for the interesting or important events that take place in your school. Write at least 3 entries.
Answer:
Dairy 1.

15th June, 2016.

Dear Diary,
Today was the first day of our new academic year. It was a fun filled day meeting new teachers and friends.
I am looking forward to the days ahead. My friends and I have made several plans to make the most of our time in school. The new textbooks are really very informative and colourful.
I am all excited about the days ahead.

– XYZ

Dairy 2.

15th Aug, 2016.

Dear Diary,
We had a tree plantation drive in our school on the occasion of Independence Day. All of us had to take saplings to school. I had taken a mango sapling. I wonder when my sapling will grow into a huge tree. There were posters everywhere, one which said – “Plant and preserve, Plant and protect, Plant and prosper, Plant and perish”.

-XYZ

Dairy 3.

12th Dec, 2016.

Dear Diary,
Today was our Sports Day. It was inaugurated by our Sports Minister. After the speeches, the competitions started. Various competitions were held. The most exciting were the Tug of War and Relay. I won the gold medal in 100 m Running. What an eventful day it was!

-XYZ

7. Language Study: Degrees of comparison.
We use different forms of adjectives and adverbs to show comparison. They are known as degrees of comparison.

• Positive: Mangesh was ac strong ac Ravi.
  She is as tall as her sister.
• Comparative: Mangesh was stroll gel’ than other players.
  She is taller than her sister.
• Superlative: Mungesh was the strongest player in the team.
  Their sister is the tallest amongst the three.

8. Complete the following sentences using your own ideas.

1. The princess was as …………. as………… . (Positive)
2. The princess was ……………. than …………….. .(Comparative)
3. The princess was the ……………. amongst all ………… .(Superlative)

Note that we usually add ‘-er’, ‘-est’ to short adjectives and use more’ or ‘moSt’ with longer adjectives.
Examples:

• high – higher – highest
• attractive – more attractive – most attractive
• nice – nicer – nicest
• interesting – more interesting – most interesting

Question 1.
Complete the following sentences using your own ideas.

1. The princess was as …………. as………… . (Positive)
2. The princess was ……………. than …………….. .(Comparative)
3. The princess was the ……………. amongst all ………… .(Superlative)

Answer:

1. The princess was as beautiful as Princess lane.
2. The princess was taller than Prince Arthur.
3. The princess was the best among all girls.

9. Read the following words and name the degree of comparison shown by each.
good – better – best bad – worse – worst

Class 6 English Chapter 1.5 A Kabaddi Match Additional Important Questions and Answers

Answer the following in one or two sentences.

Question 1.
What led to the hopes of class 9 A soaring?
Answer:
The inclusion of three new students in class 9A, who were outstanding Kabaddi players led to the hopes of the class soaring.

Question 2.
How did the spectators boost the morale of both the teams?
Answer:
When the match started, all the spectators clapped and boosted the morale of both the teams.

Question 3.
How was the first point of the game scored?
Answer:
Raider Govind was so swift that before the opponents realised it, he had touched Suresh from 9B and was already heading home and a point was scored.

Question 4.
What was the strength of Ravi from 9B?
Answer:
Ravi from 9B, was a very strong player and he could single-handedly catch hold of any player tightly in between his legs, twisted like scissors. Releasing oneself from his grip would be next to impossible.

Question 5.
Why was Ravi relaxed?
Answer:
Ravi was relaxed as he had never dreamt of any strong opposition from any team.

Question 6.
Which quality helped Mangesh to prove his mettle?
Answer:
The quality of determination helped Mangesh . to prove his mettle.

Question 7.
What was the result of Mangesh’s efforts?
Answer:
Mangesh, through his efforts not only saved himself but was able to score three points for his team as Ravi, Mohan and Ajinkya who were holding him were also declared out.

Question 8.
How was the whole of 9B team declared out?
Answer:
The three players from 9B trapped Vivek but he slowly moved back towards his court with the three anti-raiders moving with him. When they caught his arm and were trying to pull him back, Vivek slipped his leg beyond the midline with the anti-raiders still hanging on to his arm. Thus, the whole of 9B team was declared out.

Question 9.
What helped 9 A beat 9B who had never tasted defeat earlier in the game of Kabaddi?
Answer:
9A outplayed 9B in all areas of Kabaddi. Their team spirit, confidence, strategies, swiftness and suppleness helped them to beat 9B who had never tasted defeat before.

Reading Skill, Vocabulary and Grammar

Read the following passage and complete the activities that follow.

Question 1.
Prepare a word register for the word ‘sports’.
Answer:
courts, teams, opponents, players Extract:
In Kabaddi, two teams of seven members each, face each other on a flat rectangular court, divided by a midline. The game is usually played in two halves with a halftime break in between. After the break, the teams exchange their sides on the court.

To play the game, each team sends ‘raiders’ across the midline to the other team. The raider tries to ‘tag’ the opponents and run back to his side, all in one breath. To show that he hasn’t inhaled again, he has to chant ‘Kabaddi-Kabaddi’ all the time. If he has to inhale again, he is ‘out’.

The opponents try to catch the raider and stop him from going back to his half till he loses his breath, and has to inhale again. If the raider manages to go back successfully, all the persons he has tagged and all those who have touched him are declared out. For each player declared out, the opposite team scores a point. If all the seven players in a team are ‘out’, the opposite team gets bonus points – a Iona. The team with the maximum points wins the match.

The game of Kabaddi requires good health, muscular strength, strategic skills, a lot of practice and above all, great determination.

Question 2.
Which aspects of the game of Kabaddi is highlighted in this extract?
Answer:
The rules of the game of Kabaddi and the qualities required to excel in this game are title two aspects discussed in this extract.

Question 3.
What should each team do to play the game?
Answer:
To play the game, each team sends ‘raiders’ across the midline to the other team.

Question 4.
What does the raider do?
Answer:
The raider tries to ‘tag’ the opponents and run back to his side, all in one breath.

Question 5.
Why should the raider chant ‘Kabaddi- Kabaddi’ all the time?
Answer:
To show that the raider has not inhaled again, the raider has to chant ‘Kabaddi-Kabaddi’ all the time.

Question 6.
When does the opposite team get bonus points?
Answer:
When all the seven players in a team are ‘out’, the opposite team gets bonus points – a Iona.

Question 7.
Which team wins the match?
Answer:
The team with the maximum points wins the match.

Question 8.
What are the qualities essential to excel at Kabaddi?
Answer:
To excel in the game of Kabaddi one requires good health, muscular strength, strategic skills, a lot of practice and above all, great determination.

Question 9.
The team with the maximum points wins, the match. (State the word class of the underlined word.)
Answer:
maximum – adjective

Question 10.
Do you think sports plays an important role in development? Elaborate.
Answer:
Mahatma Gandhi, has rightly said: “Education is the all-round development of an individual – body, mind and spirit.”
Sports plays an important role in contributing to our physical fitness apart from developing essential values and virtues.

Language Study

Do as directed.

Question 1.
The school sports meet was scheduled next month. (State the part of speech of the underlined word.)
Answer:
next – adjective

Question 2.
The practice matches had already begun. (Add a question tag.)
Answer:
The practice matches had already begun, hadn’t they?

Question 3.
When the match started, all the spectators clapped and boosted the morale of both the teams. (Pick out the action words.)
Answer:
started, clapped, boosted

Question 4.
9A won the toss and sent their raider Govind. (Begin the sentence with, “Winning the toss ……”)
Answer:
Winning the toss, 9A sent their raider Govind.

Question 5.
All the players were literally afraid of him. (Pick out the adverb.)
Answer:
Adverb: literally

Question 6.
Mangesh from 9A was strong. (Form a Wh- question to get the underline word as the answer.)
Answer:
Who was strong?

Question 7.
Kabaddi is an ancient sport. (Pick out the article.)
Answer:
an – article

Question 8.
The team with the maximum points wins the match. (Pick out the collective noun.)
Answer:
team – collective noun

Question 9.
Indian girls and boys have always excelled at Kabaddi. (Pick out the naming words.)
Answer:
girls, boys, Kabaddi – Naming words

Question 10.
One day, you may help win glory for your school. (Pick out the modal and state its function.)
Answer:
may – possibility

Change into the positive degree of comparison.

Question 1.
Kabaddi is the most popular game in this school.
Answer:
No other game is as popular as Kabaddi in this school.

Question 2.
Kevin was the strongest player.
Answer:
No other player was as strong as Kevin.

Question 3.
Kabaddi is more popular than that game.
Answer:
This game is not as popular as Kabaddi.

Question 4.
He is the best Kabaddi player in the school.
Answer:
No other Kabaddi player in the school is as good as he is.

Name of Kabaddi in different parts of the world.

• baibalea – Maldives
• hadudu – Bangladesh
• kabaddi – Denmark
• kabaddi – Kenya
• kabaddi – Spain

Complete the table.

Writing Skills

Flow Chart:

Question 1.
Arrange the points in proper order to show how the game of Kabaddi is played. Write the numbers in the blocks.
Answer:

Essay:

Question 1.
Write an essay using the points given below.
What characteristics are needed to be a good player of Kabaddi?
What should we do to develop each of them?
Answer:
A Good Kabaddi Player
Any player requires various characteristics to emerge as a good player. The game of Kabaddi too requires physical and mental fitness. While good health, muscular strength and strategic skills are essential to emerge a winner, also equally important are other traits. Determination, dedication, devotion, consistency in performance and willingness to give one’s best, too are of paramount importance.

We can acquire these skills if we resolve to do our best and give our hundred percent to the game. Right skills, ample practice and the will to excel will help us reach our goal. Watching Kabaddi matches on television, seeking help from experts, finding one’s weak areas and working on them are ways in which we can develop attributes to become a good Kabaddi player.
‘Hardwork is the key to success’ in Kabaddi or any other game.

Let Us Remember:

“The heights which great men,
Reached and kept,
Were not attained by sudden flight,
They, while their companions slept, were toiling upwards in the night.”

Do yoy know?

Kabddi World Cup
The 2016 World Cup, the third standard style Kabbadi World Cup was an international Kabbadi tournament contested from 7th October 2016 to 22nd October 2016 at the Arena, in Ahmedabad. 12 countries had competed in the tournament and 33 matches been played. The tournament was won by India who defeated Iran 38-29 in the Championship Games to win their third Kabbadi world cup.

Kabaddi Match Summary in English

The lesson begins with a School Sports Meet through which the rules and strategies of the game are shared with the reader. The extract also highlights the qualities displayed by the winning team – team spirit, confidence, right strategies, swiftness and suppleness.
The lesson goes on to talk about the rules of the game and ends with qualities essential to excel in this game.

Introduction:

This lesson is about Kabaddi, an outdoor sport which originated in India, and is now popular in many countries of the world.

Glossary:

1. sports meet (n) – an event where sports competitions are held
2. scheduled (v) – planned
3. outstanding (adj) – very good
4. pectators (n) – people who watch a game
5. opponents (n) – ones who compete with another in a game
6. grip (n) – a firm hold
7. literally (adv) – exactly
8. anti-raiders (n) – every player in whose court, raid is being made
9. determination (n) – firmness in purpose
10. cautiously (adv) – in a guarded manner
11. strategies (n) – plans of action to achieve an aim
12. enviable (adj) – sought after
13. ace (adj) – one who excels
14. swiftness (n) – moving with rapid speed
15. suppleness (n) – flexibility
16. inhale (v) – breathe in
17. tagged (v) – to follow someone from one place to another
18. strategic (adj) – useful in achieving a plan
19. resolve (n) – firm decision

Balbharti Maharashtra State Board Class 6 English Solutions Chapter 1.4 Children are Going to School … Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 English Solutions Chapter 1.4 Children are Going to School …

Class 6 English Chapter 1.4 Children are Going to School … Textbook Questions and Answers

1. Read the poem aloud.

Question 1.
Read the poem aloud.

2. Find atleast two things from the poem that show the following:

Question a.
It is early morning:
Answer:

1. Morning light spreads over the earth.
2. The sun, after his morning dip in the river dressed up in his golden muslin turban waits and smiles on one side of the road.

Question b.
The atmosphere is pleasant.
Answer:

1. Breezes sing their songs of blessings.
2. Fragrant flowers awaken the sleepy roads with their melodies.

3. Apart from children, no other human beings are mentioned in the poem. However, many natural elements are shown to act like person. Name them and also write what they do.

Question 1.
Apart from children, no other human beings are mentioned in the poem. However, many natural elements are shown to act like person. Name them and also write what they do.
Answer:

1. The sky: Sky bows his head in respect for children going to school.
2. The sun: The sun waits and smiles on one side of the road for the children are going to school.
3. The breezes: Through the green-topped branches, breezes sing their songs of blessings.
4. The fragrant flowers: They awaken the sleepy roads with their melodies.
5. The peepal tree: It waves his hands for the children going to school.
6. Every particle of the earth: Throbs like a mother’s heart for the children going to school.
7. Pigeons: Fly in the sky for children going to school.

4. Draw a picture of the scene described in the poem.

Question 1.
Draw a picture of the scene described in the poem.

5. The whole world is happy because children are going to school. Why is it so? Discuss it in the classroom.

Question 1.
The whole world is happy because children are going to school. Why is it so? Discuss it in the classroom.
Answer:
Children going to school is a beautiful sight. The fun they have, the little games they play, the mischievous things they do enroute to the school, all make it a pretty picture. So, the whole world is happy to witness this sight. Apart from this, it is important that children go to school for their development and the development of the world at large. So, the whole world is happy because children are going to school.

6. Write about how your family supports you to go to school.

Question 1.
Write about how your family supports you to go to school.
Answer:
My family is my greatest support system. They support me in every way to go to school. Packing my lunch box and bag with books and learning material is done by my mother. My father helps me to keep my books complete. He also helps me to get ready to go to school before dropping me to school.

7. What would happen if children didn’t go to school? Discuss the question in groups of 5-8 and prepare a short composition on it.

Question 1.
What would happen if children didn’t go to school? Discuss the question in groups of 5-8 and prepare a short composition on it.
Answer:
School is a temple of knowledge. If children didn’t go to school, they would not attain knowledge. In a school, they learn different subjects, good qualities and various skills. This helps them to become good individuals and great citizens. Children who don’t go to school will be denied all these experiences. They will also miss out all the fun other children have in schools.

We should ensure that every child is sent to school so that he receives good education. This will not only help him to realise his dreams but also help him contribute towards national development. Let us educate and empower ourselves and work towards a bright future.

8. Write in short about what your parents/guardians feel when they send you to school.

Question 1.
Write in short about what your parents/guardians feel when they send you to school.
Answer:
Parents/guardians experience mixed feelings when they send us to school. They feel happy that we are going to school to acquire knowledge, skills and values and at the same time they miss our absence from home too.
Sometimes, if the school is far away, parents and guardians are worried till we get back. At the same time they are aware that for our bright future it is essential to go to school. They are proud that we are doing our best in school by making the most of our experiences.

9. List five of your favourite Hindi or Marathi poems or songs. Try to translate any one of them into English.

Question 1.
List five of your favourite Hindi or Marathi poems or songs. Try to translate any one of them into English.

10. Visit a library. Find a school poem. Recite it to your parents.

Question 1.
Visit a library. Find a school poem. Recite it to your parents.

Class 6 English Chapter 1.4 Children are Going to School … Additional Important Questions and Answers

Answer in one or two sentences.

Question 1.
When and to whom does the sky bow his head in respect?
Answer:
When the morning light spreads over the earth, the sky bows his head in respect to the children going to school.

Question 2.
How has the poet described the sun in the poem?
Answer:
The sun is described beautifully by the poet. He says that after the sun’s morning dip in the river, dressed up in golden muslin turban it waits and smiles on one side of the road for the children going to school.

Question 3.
Who waves at the children going to school?
Answer:
The peepal tree waves his hands at the children going to school.

Question 4.
Why is every road shining bright?
Answer:
The angels of light have set out and so every road is shining bright.

Reading Skill, Vocabulary and Poetic Devices

Read the following extract and complete the activities that follow.

Question 1.
Complete the web diagram with the elements of nature mentioned in the extract.
Answer:

Question 2.
What does the poet convey through the above poem?
Answer:
The poet conveys the happiness of all the elements of nature at the sight of children going to school.

Question 3.
What do the breezes do as the children are going to school?
Answer:
Through the green-topped branches, the breezes sing their songs of blessings.

Question 4.
What do the fragrant flowers do as the children are going to school?
Answer:
The fragrant flowers awaken the sleepy roads with their melodies as the children are going to school.

Question 5.
What has the poet compared the throbbing of every particle of the earth to?
Answer:
The poet has compared the throbbing of every particle of the earth to the throb of a mother’s heart.

Question 6.
Explain the line:
Angels of light have set out Every road is a-gleam.
Answer: The sunlight is rejoicing at the sight of the children going to school and it has made the roads shining bright for the children.

Question 7.
Name the rhyme scheme used in the last four lines of the poem.
Answer:
abed

Question 8.
Pick out an example of Simile from the extract.
Answer:
At this hour, every particle of the earth throbs like a mother’s heart.

Question 10.
What are the emotions you experience at the thought of going to school?
Answer:
I am filled with happiness and joy at the thought of going to school. I look forward to have fun, frolic and enjoyment in school and so I get very excited at the very thought.

Student’s Activity:

Spot the words based on the clues given.

Answer:

1. Greenery, leafy cover
2. Sweet music
3. A kind of soft cotton fabric
4. Light wind

Observe the words given below. Write a story in about hundred words based on the same:

Children are Going to School … Summary in English

‘Children Going to School’ is a beautiful poem translated from ‘Bachche School Ja Rahe Hai’ written by Nida Fazli. The poem talks about how natural elements like the sky, sun, breezes, fragrant flowers, peepal tree, every particle of the earth and pigeons etc., are happy at the sight of children going to school. They express their happiness in different ways as the children find their way to school.

Introduction:

The poem highlights the reaction of different elements of nature at the sight of children going to school.

Glossary:

1. dip (n) – plunge into the river (here)
2. muslin (n) – a kind of soft cotton fabric
3. green-topped branches – branches covered with leaves
4. breezes (n) – light wind
5. melodies (n) – sweet music
6. foliage (n) – greenery, leafy cover
7. gleam (n) – shining bright

Balbharti Maharashtra State Board Class 6 English Solutions Chapter 1.1 Don’t Give Up! Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 English Solutions Chapter 1.1 Don’t Give Up!

Class 6 English Chapter 1.1 Don’t Give Up! Textbook Questions and Answers

1. Have you ever given up on something good? Share your story.

Question 1.
Have you ever given up on something good? Share your story.
Answer:
I was a very good cricketer. But on a couple of occasions, I got a feeling that my team failed due to my poor performance. I stopped pursuing the game, but today I regret my decision. I realised very late that: ‘A quitter never wins and a winner never quits’.

2. Your friend fell down learning to ride a bicycle and now has given it up altogether. What do you think will be the poet’s advice?

Question 1.
Your friend fell down learning to ride a bicycle and now has given it up altogether. What do you think will be the poet’s advice?
Answer:
‘Rise each time you fall, never give up’ would be the advice the poet would give my friend. While riding a bicycle or acquiring any new skills, we are bound to fall or face disappointments. The poet would advise him to be patient and rise stronger and achieve what he has set out to achieve with determination and resilience.

Class 6 English Chapter 1.1 Don’t Give Up! Additional Important Questions and Answers

Answer the following questions.

Question 1.
What should we not do if we have tried but not won?
Answer:
If we have tried but not won, we should never stop for crying or feel dejected about the same.

Question 2.
Name two elements of nature mentioned in the poem which display determination and strength.
Answer:
‘Young birds’ and the ‘oak tree’.

Question 3.
Pick out two describing words used in the poem.
Answer:
Young, sturdy

Question 4.
Circle the odd word. great good patient (blast)
Answer:
Blast, the rest are describing words.

Question 5.
Name any one personality from the pages of history who didn’t give up till he succeeded. Justify your answer.
Answer:
Our Father of the Nation, Mahatma Gandhi, did not give up or buckle under pressure in our struggle for independence. Finally, due to his relentless efforts and determination, we became free from the British rule and became an independent nation.

Question 6.
Explain the line: “If by easy work you beat, who the more will prize you?”
Answer:
The above lines from the poem ‘Don’t Give Up’ written by Phoebe Cary convey the message that if success comes to us easily it will not be considered as our achievement. Rising above challenges and failures, and emerging a winner is true success, according to the poet.

Reading Skills, Poetic Device

Read the following stanza and answer the questions that follow.

Question 1.
Pre-reading activity:
Complete the web diagram with action words from the poem.
Answer:

Question 2.
What is the central idea of the poem?
Answer:
The central idea of the poem is that we should never give up and be patient in the face of failures as we continue to keep trying. Failures are bound to occur. We should not lose heart and stop trying but gain victory from defeat with our willpower and our determination.

Question 3.
According to the poet, how has the great and good been done in this world?
Answer:
According to the poet, all that’s great and good is done just by trying, with patience and determination till we achieve our goal.

Question 4.
What happens to the young birds while they try to fly?
Answer:
The young birds fall as they try to fly.

Question 5.
Pick out lines to prove that the oak has survived many blows of stormy winds.
Answer:
‘She has risen again and grown, Loftier and prouder’.

Question 6.
Pick out a contraction from the extract.
Answer:
You’ve (It stands for you have)

Question 7.
Do you agree with the maxim: ‘Try, try, till you succeed’?
Answer:
Yes. I agree with the maxim: ‘Try, try till you succeed’. We should remember that ‘A quitter never wins and winner never quits’.
People like Mahatma Gandhi, Sachin Tendulkar, A.P.J. Abdul Kalam and others have proved the above maxim to be right, with their life and work.
We should remember that disappointments and failures are bound to occur in our journey to succeed, but we should never lose heart. We should keep trying patiently till we accomplish our goal.

Poetic Device/Appreciation:

Question 1.
Find the meaning of the following expressions.
Answer:

1. All that’s great and good: All the great achievements and accomplishments we see around us.
2. Has known many a blast: The tree has survived many blows of stormy weather.
3. The test that tries: A situation which is challenging, and which tests our endurance, our resilience and our willpower.

Poetic Devices:

Question 1.
Pick out two pairs of rhyming words from the poem.
Answer:

• won – done
• stronger – longer
• known-grown

Question 2.
Name the rhyme scheme used in the first four lines of the poem.
Answer:
abab

Question 3.
Name and explain the figure of speech used in the line.
‘That’s the test that tries you’.
Answer:
The figure of speech used in the above line is Alliteration as the sound of the alphabet’t’ is repeated for a better poetic effect.

Student’s Activity:

Question 1.
Find real life stories of some indians, abled and disabled, who have beaten all odds to become great achievers. You can also make a power point presentation with the help of your teacher.

Don’t Give Up! Summary in English

‘Don’t Give Up’ written by Phoebe Cary has a beautiful message for each one of us. The poet advises us never to be disheartened or dejected by failures. We are reminded that all the great and good things in this world is done just by patience and relentless efforts of the concerned people.

The poet gives the example of young birds who in their initial flights, fall but rise higher and stronger each time, thus proving that resilience and determination can help scale great heights.

The sturdy oak too has withstood challenges of time before rising up taller, stronger and prouder. Our achievements and our accomplishments may not be celebrated by others if it had come to us easily. But despite all odds, overcoming all challenges, rising above defeats when we achieve our goal and gain victory, that will be our true test, our real victory.

Introduction:

‘Don’t Give Up’ written by Phoebe Cary conveys the message that failures should not discourage us from achieving what we have set out to do. In a nutshell, the poet is conveying the message that we should never quit, however hard the situation and emerge a winner.

Glossary:

1. patient (adj) – a person with calm endurance
2. sturdy (adj) – strong
3. oak (n) – a deciduous forest tree
4. victory (n) – success achieved
5. test that tries (phr) – something done to discover/test our ability
6. give up (phr) – lose heart and stop trying
7. has known many a blast (phr) – has survived many blows of stormy winds
8. loftier (adj) – taller and stronger
9. you beat (phr) – you win (here)
10. resilience (n) – able to recover quickly from difficult conditions.

Balbharti Maharashtra State Board Class 6 Science Solutions Chapter 5 Substances in the Surroundings – Their States and Properties Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 Science Solutions Chapter 5 Substances in the Surroundings – Their States and Properties

Class 6 Science Chapter 5 Substances in the Surroundings – Their States and Properties Textbook Questions and Answers

1. In the paragraph below write ‘solid’, ‘liquid’ or ‘gas’ in each of the blank (brackets) depending on the substance referred to just before.

Question a.
On a bright sunny day, Riya and Gargi are playing with a ball (…..) in the park. Gargi feels thirsty. So, Riya brings tender coconut water (…..) for her. At the same time, a strong breeze (…..) starts blowing and it also begins to rain (…..). They run back into the house (…..), change their clothes (…..) and then their mother gives them a cup (…..) of hot milk (…..) to drink.
Answer:
solid, liquid, gas, liquid, solid, solid, solid, liquid.

2. Discuss.

Question a.
Riya pours some water from her bottle into another bottle. Does it change the shape of the water?
Answer:
Yes, the shape of water changes as water is in liquid state. Liquids do not have a shape of its own. They take the shape of the container.

Question b.
Halima picks up a small stone from the ground and puts it in the water in a dish. Does the shape of the stone change?
Answer:
No, the shape of the stone does not change. Stone is a solid, hence retains its shape.

3. Write the properties of these substances.
(water, glass, chalk, iron ball, sugar, salt, flour, coal, soil, pen, ink, soap)

Question a.
Write the properties of these substances.
(water, glass, chalk, iron ball, sugar, salt, flour, coal, soil, pen, ink, soap)
Answer:
Properties of substances:

4. What is sublimation? Write the names of everyday substances that sublimate.

Question a.
What is sublimation? Write the names of everyday substances that sublimate.
Answer:

1. The change of a solid substance directly into a gas or vapour without first changing into liquid is called sublimation.
2. Substances that sublimate: Camphor, napthalene balls, ammonium chloride, iodine.

5. What is made from? Why? 
a. A sickle to cut sugarcane.
b. The sheets used for roofing.
c. A screwdriver
d. A pair of tongs.
e. Electric cables.
f. Ornaments.
g. Pots and pans.

Question a.
A sickle to cut sugarcane.
Answer:
A sickle is made of iron. An iron sickle is hard and malleable. When sharpened it will be able to cut the hard sugarcane.

Question b.
The sheets used for roofing:
Answer:

1. The sheets used for roofing are made of plastic, aluminium.
2. Plastic is hard, hence, protects against weather conditions.
3. Plastic is transparent, hence, sunlight can pass through it.
4. Aluminium is hard, light weight and durable, hence, protects against all weather conditions.
5. Malleable hence formed into thin sheets.

Question c.
A screwdriver:
Answer:

1. A screwdriver is made up of iron, steel, aluminium.
2. A screwdriver possesses property of hardness hence, it easily pierces a screw in piece of wood, wall, metals etc.

Question d.
A pair of tongs:
Answer:

1. A pair of tongs are made up of iron, steel aluminium etc. Tongs are used to lift hot, boiling utensils or vessels.
2. Tongs are hard, ductile and malleable.
3. Hence, have strong grip to hold utensils.
4. Rubbers fitted on the ends will protect from thermal conduction, from bums.

Question e.
Electric cables:
Answer:

1. Electric cables are metal wires (thin) wound in plastic.
2. Metal wires possess the property of hardness, ductility, electrical conductivity.
3. Plastic /rubber covering possesses the property of hardness, elasticity and are bad conductors of heat and electricity.

Question f.
Ornaments:
Answer:

1. They are made up of metals like gold and silver.
2. They possess the property of hardness, ductility, malleability, lustre.

Question g.
Pots and pans: Answer:

1. They are used to cook food, hence metals like aluminium, steel are used.
2. They possess the property of hardness, ductility, malleability, thermal conductivity, electrical conductivity, (microwave ovens)

6. What will happen if ….? And why?

Question a.
Nails are made of plastic
Answer:
If nails are made of plastic, they will not be able to pierce through other substances on being pushed or forced by a hammer. Plastic lacks the property of hardness.

Question b.
A bell is made of wood.
Answer:

1. If a bell is made of wood it will never make a ringing sound. A wooden bell does not have the property of being sonorous.
2. Sonority is the property of metals to produce a ringing sound.

Question c.
Rubber is not fitted on a pair of tongs.
Answer:

1. Rubber is a bad conductor of heat and electricity. It will not allow heat to pass to the hands/handle of the tongs, thus protecting us.
2. Pair of tongs are made up of metals which conduct heat and electricity. They have file property of thermal conduction and electrical conduction.
3. If rubber is not fitted on a pair of tongs, we will not be able to lift hot objects with it.

Question d.
A knife is made of wood.
Answer:
Wood does not have the property of malleability. Therefore, the edge of wooden knife will be blunt. Hence, we will not be able to cut anything with it.

Question e.
An axe is made of rubber.
Answer:

1. If an axe is made of rubber, it will not be used to cut wood or tree.
2. Rubber does not have the property of hardness that is required to push through to cut it.

7. Who am I?

Question a.
I’m found in a thermometer, I measure your temperature.
Answer:
Mercury

Question b.
I make things hot or cold.
Answer:
Heat

Question c.
I have no shape whatsoever!
Answer:
Liquid, gases

Question d.
I dissolve in water, but not in kerosene.
Answer:
Salt

8. Why does this happen? 

Question a.
Coconut oil thickens in winter.
Answer:
Coconut oil is in liquid state. In winter the surrounding temperature / atmospheric temperature starts decreasing. Coconut oil starts cooling or losing heat, it changes to solid state.
Thus coconut oil thickens in winter.

Question b.
Kerosene left open in a dish disappears.
Answer:
When kerosene is left open in a dish, it is exposed to surrounding temperature. As the temperature is more, kerosene starts continuously evaporating and finally disappears.

Question c.
The fragrance of incense sticks lighted in one corner of a room spreads to the other corner.
Answer:
The fragrance of incense sticks is given out in the form of scented vapours. As vapours are in gaseous state, the gas molecules spread out in the room. The molecules of gas move very fast and there are no forces to stop them from going apart. Therefore the fragrance of incense sticks lighted in one corner of room spreads to the other corner.

Question d.
What you see in the picture.

Answer:
The mass of plastic ball is less than an apple. This difference is because of their densities. Since an apple has greater density, it will sink to the bottom on other hand the plastic ball has lesser density, it will float over water surface.

Activity: 

Question 1.
Find out how the big statues of wax are made.

Question 2.
Visit a jeweller’s shop and find out how ornaments are made.

Class 6 Science Chapter 5 Substances in the Surroundings – Their States and Properties Important Questions and Answers

Fill in the blanks:

Question 1.
The state of a substance changes if it is …………… or …………… .
Answer:
heated, cooled

Question 2.
Every substance in our surroundings is found in either the ……………, …………… or gaseous state.
Answer:
solid, liquid

Question 3.
On …………… heat, the substance changes from solid to liquid and liquid to gas.
Answer:
gaining

Question 4.
When the substance cools, or …………… heat, it changes from gaseous to liquid and liquid to solid state.
Answer:
loses

Question 5.
A …………… amount of heat must be gained or lost before the state of a substance can change.
Answer:
specific

Question 6.
When a substance gets heat, it becomes …………… and then …………… .
Answer:
warm, hot

Question 7.
If the substance is very hot, we could get …………… .
Answer:
scalded

Question 8.
A thermometer is used to measure …………… .
Answer:
temperature

Question 9.
…………… is the unit of measuring temperature.
Answer:
Degree Celsius (°C)

Question 10.
Nowadays, …………… thermometers are frequently used.
Answer:
digital

Question 11.
Solids have a shape of its …………… .
Answer:
own

Question 12.
Solids have a …………… volume.
Answer:
definite

Question 13.
Liquids take the shape of the …………… .
Answer:
container

Question 14.
Liquids have a …………… volume.
Answer:
specific

Question 15.
Air occupies all the available …………… .
Answer:
space

Question 16.
Evaporation occurs from the …………… of the water.
Answer:
surface

Question 17.
At sea-level, pure water boils at …………… .
Answer:
100°C

Question 18.
Condensation of steam takes place at …………… .
Answer:
100°C

Question 19.
The temperature of a substance can fall below …………… .
Answer:
0°C

Question 20.
Ice melts at …………… .
Answer:
0°C

Question 21.
Each substance has a specific boiling point which is also its …………… point.
Answer:
condensation

Question 22.
Each substance has a specific melting point which is the same as its …………… point.
Answer:
freezing

Question 23.
Candles are made by melting …………… wax.
Answer:
paraffin

Question 24.
Solid carbon-dioxide is …………… .
Answer:
dry ice

Question 25.
Liquid …………… is used in animal husbandry.
Answer:
nitrogen

Question 26.
Sand is melted to make …………… .
Answer:
glass

Question 27.
Iron is melted to make …………… .
Answer:
tools

Question 28.
Substances can be identified by studying their …………… .
Answer:
properties

Question 29.
Substances that break into small particles are said to be …………… .
Answer:
brittle

Question 30.
The …………… of any liquid is determined by how easily it flows.
Answer:
fluidity

Question 31.
Between substances of the same volume, the ones with greater density are …………… than those of lesser density.
Answer:
heavier

Question 32.
The property of a substance of getting …………… is called its solubility.
Answer:
dissolved

Question 33.
Minerals from the earth’s crust are …………… to obtain metals.
Answer:
processed

Question 34.
Metals can be converted into …………… by hammering.
Answer:
sheets

Question 35.
Metals can be stretched and drawn into …………… .
Answer:
wires

Question 36.
All metals are …………… of electricity to a greater or lesser extent.
Answer:
conductors

Question 37.
Every metal has a …………… colour by which it can be identified.
Answer:
specific

Question 38.
Metals produce …………… sound.
Answer:
ringing

Question 39.
Metals form a …………… group of substances.
Answer:
separate

Question 40.
Heat is the cause of the change of the state of …………… .
Answer:
substances

Match the columns:

Question 1.

Answer:

Answer in one sentence:

Question 1.
What is change of state of substances?
Answer:
When a substance changes from one state to another, the process is called change of state of the substance.

Question 2.
When does state of substance change?
Answer:
State of substance changes when it is heated or cooled.

Question 3.
In which state do substances exist in our surroundings?
Answer:
The substances exist in solid, liquid and gaseous form in our surroundings.

Question 4.
What happens when a substance gains heat?
Answer:
When a substance gains heat, it changes its state i.e. from solid to liquid and liquid to gas.

Question 5.
What happens when a substance loses heat?
Answer:
When a substance loses heat, it changes its state from gaseous to liquid and liquid to solid state.

Question 6.
How do we tell how hot or cold a substance is?
Answer:
The temperature on the thermometer will tell us how hot or cold a substance is.

Question 7.
What is the unit of measuring temperature.
Answer:
Degrees Celsius (°C) is the unit of measuring temperature.

Question 8.
What is the boiling point of water?
Answer:
The boiling point of water is 100° C.

Question 9.
What is condensation?
Answer:
When vapour cools, it is converted into liquid again. This process is condensation.

Question 10.
At what temperature condensation of steam takes place?
Answer:
Condensation of steam takes place at 100° C.

Question 11.
What is the freezing point of water?
Answer:
0° C is the freezing point of water.

Question 12.
What is the temperature of air in the freezer of a refrigerator?
Answer:
-18° C is the temperature of air in the freezer of a refrigerator.

Question 13.
At what temperature ice melts?
Answer:
Ice melts at 0° C.

Question 14.
How are candles made?
Answer:
Candles are made by melting paraffin wax.

Question 15.
What is the use of solid carbon-dioxide?
Answer:
Solid carbon-dioxide (dry ice) is used to make ice cream and to keep it frozen.

Question 16.
What is the use of liquid nitrogen?
Answer:
Liquid nitrogen is used in animal husbandry.

Question 17.
What is sublimation?
Answer:
The change of a solid substance directly into gas or vapour without changing into a liquid is called sublimation.

Question 18.
Define brittleness / What is brittleness?
Answer:
Some substances break into small pieces or particles. Such substances are said to be brittle. This property of substances is called brittleness.

Question 19.
Define hardness / What is hardness?
Answer:
The hardness of a substance is determined by how much resistance it offers to the substances being pushed through it.

Question 20.
Define elasticity / What is elasticity?
Answer:
Some substances change their shape when a force is applied on them but return to their original shape and size when the force is removed. This property is called elasticity.

Question 21.
Define fluidity / What is fluidity?
Answer:
Liquids flow downward on a sloping surface. This property is called fluidity.

Question 22.
How is fluidity of any liquid determined?
Answer:
Fluidity of any liquid is determined by how easily it flows.

Question 23.
Define density / What is density?
Answer:
The mass of different substances having the same volume can be different. This difference is because of the difference in their densities. Between substances of the same volume, the ones with greater density are heavier than those of lesser density.

Question 24.
Define solubility / What is solubility?
Answer:
The property of a substance of getting dissolved is called its solubility.

Question 25.
Define transparency / What is transparency?
Answer:
When we can look through a substance and see things on the other side, then that substance is said to be transparent. This property of the substances is called transparency.

Question 26.
List some transparent substances.
Answer:
Glass, air, clean water and some types of plastic are transparent substances.

Question 27.
What are metals?
Answer:
Metals are substances like copper, gold, iron, aluminium. They are found in the form of minerals deep inside the earth. Minerals from the earth’s crust are processed to obtain metals.

Question 28.
Define malleability. / What is malleability?
Answer:
Metals can be converted into sheets by hammering. This property of metals is called malleability.

Question 29.
Define ductility. / What is ductility?
Answer:
Metals can be stretched and drawn into thin wires. This property of metals is called ductility

Question 30.
Name some ductile metals.
Answer:
Metals like silver, gold, platinum can be drawn into fine wires.

Question 31.
Define electrical conductivity. / What is electrical conduction?
Answer:
Electricity flows through metals. All metals are conductors of electricity to a greater or lesser extent.

Question 32.
Define thermal conductivity. / What is thermal conductivity?
Answer:
Metals allow heat to flow through them. This property is called thermal conductivity

Question 33.
What is lustre?
Answer:
The typical shine or characteristic colour by which metal can be identified is called lustre.

Question 34.
What is sonority of metals? / Define sonority.
Answer;
Metals produce a ringing sound. This property is called the sonority of metals.

Give scientific reasons for following:

Question 1.
Metals are used to make musical instruments.
Answer:
Metals possess the property of being sonorous, i.e. produce a ringing sound. Hence, they are used to make musical instruments.

Question 2.
Ornaments are made up of metals.
Answer:
Metals have the property of being malleable, ductile, lustrous. Hence, ornaments are made up of metals.

Question 3.
Why should we not put our hand or finger in the water to judge the hotness of water?
Answer:
We should never put our hand or finger in the water to judge how hot it is because that is not an accurate measure. Besides if the substance is very hot, we could get scalded.

Can you tell?

Question 1.
Why are electric boards fitted on the wall made of plastic or wood?
Answer:
Plastic or wood are bad conductors of heat and electricity. Electric boards are made up of plastic or wood. So that while touching we will not get electric shock.

Question 2.
The handle of cooker is made of plastic. Why?
Answer:
Cooker is made of metal. When food is cooked in it, it gets heated and the whole of its body becomes hot due to thermal conductivity. Hence with the plastic handle we can easily lift the hot cooker as plastic is a bad conductor of heat.

Question 3.
Use your brain power!
On opening a box of camphor, its smell spreads all around. Why does this happen?
Answer:

1. Camphor is a sublimate substance.
2. When a box of camphor is opened it changes its state from solid to gas or vapour state.
3. This change takes due to the process of sublimation where camphor absorbs heat from surrounding to change from solid to gaseous state.
4. Camphor particles in gaseous state start spreading all around.
5. Hence on opening a box of camphor its smell spreads all around.

Question 4.
Identify the objects shown in fig. 5.14. From which substances are they made? What are these substances called as a group?
Answer:
In fig 5.14, the metallic bars are shown, these bars are made up of shiny solid. These substances are called metals.

Question 5.
Name the solid, liquid and gaseous states of water.
Answer:

• Solid- Ice
• Liquid – water
• Gas – water vapour.

Question 6.
Read this list of substances:
spirit, camphor, petrol, ghee, coconut oil, naphthalene balls, ammonium chloride (navsagar).

Question a.
Which one freezes in winter?
Answer:
Coconut oil, ghee.

Question b.
Which liquids have you seen change into a vapour?
Answer:
Spirit, petrol.

Question c.
Which solid directly changes into gaseous state?
Answer:
Camphor, naphthalene balls, ammonium chloride.

Question 7.
The chart given below shows the boiling point and freezing point of some substances. State whether these substances are solid, liquid or gaseous at room temperature.

Answer:
Candle, plastic and iron are in solid state at room temperature.

Distinguish between solids, liquids and gases.
Answer:

Distinguish between Boiling and Melting.
Answer:

Answer the following briefly:

Question 1.
List properties of solids
Answer:

1. Solids have its own shape i.e. Retains shape, no matter how it is kept.
2. Solids have definite volume.
3. e.g. Sand when poured on a flat surface form a heap.

Question 2.
List properties of liquids.
Answer:

1. Liquid does not have a shape of its own. Takes the shape of the container.
2. A liquid has a specific volume i.e. occupies definite portion of a container.
3. Liquids: e.g. water, milk, kerosene.

Question 3.
List properties of gases.
Answer:

1. Gases does not have a shape of its own.
2. Occupies all the available space.
3. Does not have a definite volume.
4. e.g. Air.

Question 4.
Explain with example how liquids take the shape of the surface.
Answer:
Liquids have a specific volume. They occupy definite portion of a container. Liquids spreads on a flat surface on pouring. Liquids flow downwards along a slope.

Question 5.
Explain Ebullition.
Answer:

1. As the water gets heated, its temperature increases and it evaporates at a faster and faster rate.
2. When water kept on a stove attains a particular temperature or level of heat, then evaporation takes place in all parts of the body of water.
3. Then we see water bubbles rising at a faster and faster rate to the surface and steam mixing in the air.
4. This is called boiling of water or Ebullition.

Question 6.
Explain: Boiling point and condensation point of water are one and the same.
Answer:
Water boils at 100°C. i.e. boiling point of water is 100°C. Condensation of steam also takes place at 100° C. Thus boiling point and condensation point of water are one and the same.

Question 7.
Explain freezing point of water.
Answer:

1. Water kept in a fridge or on ice becomes cooler and cooler i.e. its temperature falls.
2. At a certain temperature water does not cool further but starts freezing and forms ice.
3. The temperature at which this happens is called the freezing point of water. (0° C)

Question 8.
Explain: Freezing point and melting point of water are same.
Answer:

1. The temperature at which water does not get any cooler but starts freezing and forming ice is 0° C.
2. When ice gets heat, it starts melting or changes into liquid state at 0° C.
3. Thus, freezing point and melting point of water are one and the same.

Question 9.
List various uses of changes in physical state.
Answer:

1. Candles are made by melting paraffin wax.
2. Solid carbon-dioxide (dry ice) is used to make ice-cream and to keep it frozen.
3. Liquid nitrogen is used in animal husbandry.
4. Sand (silica) is melted to make glass.
5. Metals like gold and silver are melted to make ornaments.
6. Iron is melted to make tools.

Question 10.
List the properties of substances:
Answer:
The properties of substances are

1. Brittleness
2. Hardness
3. Elasticity
4. Fluidity
5. Density
6. Solubility
7. Transparency

Question 11.
List properties of metals:
Answer:
The properties of metals are

1. Malleability
2. Ductility
3. Electrical conductivity
4. Thermal conductivity
5. Lustre
6. Sonority

Question 12.
How can we change the volume of a gas?
Answer:
On changing the pressure on a gas in a closed container we can change its volume.

Can you tell?

Question 1.
Does water change into vapour the moment we place the vessel on a stove? Does water kept in fridge change at once into ice?
Answer:
No, it doesn’t. Water slowly changes from one state to another.

Question 2.
How do we tell how hot or cold a substance is?
Answer:
A thermometer is used to measure the temperature of the subatance which tell us hot or cold it is.

Question 3.
How will you identify the following

Question i.
A glass: Is it made of plastic, steel or glass?
Answer:
Glass is made of glass as it is transparent.

Question ii.
A rod: Iron or aluminium.
Answer:
A rod is made of iron as it is heavy.

Question iii.
A door: Wooden or glass?
Answer:
A door is wooden as it is opaque.

Question iv.
A white powder: Salt or chalk powder?
Answer:
If powder dissloves in water it is salt and if it does not dissolves in water it is chalk.

Balbharti Maharashtra State Board Class 6 Science Solutions Chapter 12 Simple Machines Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 Science Solutions Chapter 12 Simple Machines

Class 6 Science Chapter 12 Simple Machines Textbook Questions and Answers

1. Classify the following as a lever, a pulley and an inclined plane:
(A wedge, a needle, a staircase, a slide, the wheel of a flagpole, nutcrackers, scissors, an opener, an axe, a crane, a knife)

Question a.
Classify the following as a lever, a pulley and an inclined plane:
(A wedge, a needle, a staircase, a slide, the wheel of a flagpole, nutcrackers, scissors, an opener, an axe, a crane, a knife)
Answer:

2. Fill in the blanks using the proper word and complete the statements.

Question a.
The ………….. in the centre, the ………….. on one side and the on the ………….. other side make a lever of the first order.
Answer:
Fulcrum, load and effort

Question b.
The ………….. in the centre, the ………….. on one side and the ………….. on the other side make a lever of the second order.
Answer:
Load, fulcrum, effort

Question c.
The ………….. in the centre, the ………….. on one side and the ………….. on the other side make a lever of the third order.
Answer:
Effort, fulcrum, load

3. Which machines will you use to do the following work? Write their types.

Question a.
To remove the lid of a tin. Opener Lever of the second order
Answer:

• Work: To remove the lid of a tin.
• Machine: Opener
• Machine: Lever of the second order

Question b.
To lift bricks to the top of a tall building Crane Complex machine
Answer:

• Work: To lift bricks to the top of a tall building
• Machine: Crane
• Machine: Complex machine

Question c.
To cut vegetable Knife Wedge – Simple machine
Answer:

• Work: To cut vegetable
• Machine: Knife
• Machine: Wedge – Simple machine

Question d.
To draw water from a well Pulley Simple machine
Answer:

• Work: To draw water from a well
• Machine: Pulley
• Machine: Simple machine

Question e.
To hold a papad for roasting it. A pair of tongs Lever of the third order
Answer:

• Work: To hold a papad for roasting it.
• Machine: A pair of tongs
• Machine: Lever of the third order

4. Write the answers to the following questions in your own words. 

Question a.
What is meant by a simple machine?
Answer:

1. Machines which have only one or two parts and a simple and easy structure are simple machines.
2. Example: the bottle opener, nail cutter.
3. Simple machines can be handled easily.
4. We use many simple machines in our day to day life.

Question b.
Mention the advantages of using a machine.
Answer:

1. Machines, simple or complex, are used to get more work done in less time and with less effort.
2. Machines are used to accomplish certain tasks more easily.
3. Use of simple or complex machines depends upon the task to be carried out and the time and the efforts required to do it.

Question c.
What is meant by a complex machine?
Answer:

1. Complex machines have many parts which carry out many processes for completing a task.
2. For this purpose the parts are joined to one another.
3. Therefore, these machines are called complex machines.
4. Some of the parts of such complex machines are actually simple machines.
5. The structure of complex machine is complicated.

Question d.
What is a lever? How is the order of the lever determined?
Answer:

1. Lever is a simple machine made up of 3 parts: Load, effort and fulcrum.
2. Order of the lever are determined on the position of the effort, the fulcrum and the load.

5. Why is this so?

Question a.
Traveller’s bags have wheels.
Answer:

1. Combination of wheel and axle is a simple machine.
2. When the axle starts rotating due to force applied, the wheel fitted to it also starts rotating.
3. This makes easier for travellers to carry heavy load.
4. Instead of lifting heavy bag, to drawing it on wheels require less energy. Therefore, traveller’s bag have wheels.

Question b.
Machines have to be maintained.
Answer:

1. Parts of machines rub against one another when they are used.
2. Soiled, dusty parts create more friction. Some parts are affected by the weather, rust and corrosion.
3. Machines get damaged or become useless due to such wear and tear. Hence to avoid this, machines should be maintained properly to keep them in good working condition.

Question c.
A bicycle is said to be a complex machine.
Answer:

1. Bicycle has a complicated structure.
2. Bicycle has many parts which carry out many processes for completing a task.
3. Many parts of bicycle such as pedals, wheels, axle, handle are actually simple machines.
4. The parts of a bicycle are joined to one another – making it a complex machine.

6. Name the levers mentioned in the following passage. Identify the fulcrum, load and effort of each and say which type of lever it is.

Ravi and Savita sit on a sea-saw in a garden. In the mean time, a gardener is trimming trees in the garden. He puts the leaves and other garbage in the wheelbarrow. Later, Ravi gets thirsty and he buys lemon sherbet. The sherbet seller cuts the lemon and squeezes it using a lemon squeezer. He puts small pieces of ice in the glass with the help of the tongs.

Question a.
Name the levers mentioned in the following passage. Identify the fulcrum, load and effort of each and say which type of lever it is.

Ravi and Savita sit on a sea-saw in a garden. In the mean time, a gardener is trimming trees in the garden. He puts the leaves and other garbage in the wheelbarrow. Later, Ravi gets thirsty and he buys lemon sherbet. The sherbet seller cuts the lemon and squeezes it using a lemon squeezer. He puts small pieces of ice in the glass with the help of the tongs.
Answer:
Levers:

1. See – saw – lever of the first order.
   Load – fulcrum – effort.
2. Wheelbarrow – lever of the second order.
   Fulcrum – load – effort.
3. Lemon squeezers – lever of the second order.
   Fulcrum – load – effort.
4. Tongs – lever of the third order.
   Fulcrum – effort – load.

Activity:

Question 1.
Make a list of the various machines used in your home and neighborhood and write their types.

Question 2.
Go to a bicycle repair shop, observe how a bicycle is repaired, and note down the information.

Class 6 Science Chapter 12 Simple Machines Important Questions and Answers

Fill in the blanks.

Question 1.
Simple machines can be handled ………….. .
Answer:
easily

Question 2.
The structure of complex machine is ………….. .
Answer:
complicated

Question 3.
The more gradual the the ………….. lesser is the we bear. But, such an inclined plane is ………….. .
Answer:
slope, weight, longer

Question 4.
The steeper the ………….. , the ………….. is the inclined plane. But we have to bear a …………. weight.
Answer:
slope, shorter, greater

Question 5.
A screw is like a rolled up inclined plane made of an ………….. strip.
Answer:
iron

Question 6.
A wedge is used for ………… an object into two pieces or to ………….. the objects stuck together.
Answer:
breaking, separate

Question 7.
A farmer uses a strong …………. to remove the big stone bogged down in the farm.
Answer:
crow-bar

Question 8.
A device with a grooved wheel and thread designed to lift weights is called a …………. .
Answer:
pulley

Question 9.
When we use a pulley, force is applied in the downward direction for lifting the weight in an …………. direction.
Answer:
upward

Question 10.
Combination of an axle and a wheel is a …………. machine.
Answer:
simple

Question 11.
A needle and a nail are also kind of …………. .
Answer:
wedge

Question 12.
Machines are covered when not in use to prevent …………. settling on them.
Answer:
dust

Question 13.
In Archimedes’ screw, the pipe was placed at an angle of …………. with one end inside the …………. and the rod resting on a …………. .
Answer:
45°, water, flat surface.

Match the columns:

Question 1.

Answer:

Question 2.

Answer:

State whether the following statements are ‘true’ or ‘false’.

Question 1.
Lever helps big vehicle to climb up and down the mountain easily.
Answer:
False

Question 2.
Combination of wheel and axle is a simple machine.
Answer:
True

Question 3.
In pulley, force can be applied in upward direction.
Answer:
False

Question 4.
Screw is an example of wedge.
Answer:
False

Question 5.
In Archimedes screw, the rod rests on flat surface.
Answer:
True

Question 6.
A slanting plank is used to lift a weight.
Answer:
True

Question 7.
A winding road or ghat is an example of lever of first order.
Answer:
False

Answer the following questions in one sentence.

Question 1.
What is a machine?
Answer:
Devices which are used to get more work done in less time and less effort are called machines.

Question 2.
What is a simple machine?
Answer:
Machines which have only one or two parts and a simple and easy structure are called simple machines.

Question 3.
What is a complex machine?
Answer:
Some machines have many parts and they carry out many processes for completing a task. For this purpose, the parts are joined to each other. They are called complex machines.

Question 4.
List the properties of simple machines.
Answer:
Properties of simple machine are:

1. They are made up of only one or two parts.
2. They have a simple and easy structure.
3. They can be handled easily.
4. There are less chances of simple machines breaking down or getting damaged.

Question 5.
List properties of complex machines.
Answer:
Properties of complex machine are:

1. These machines have many parts to carry out many processes.
2. The parts are joined to one another.
3. The structure of complex machines is complicated.
4. Some parts of complex machines are actually simple machines.

Question 6.
What is an inclined plane?
Answer:
A slanting plank which is used to lift a weight on which we bear less weight and lifting becomes easier is an inclined plane.

Question 7.
What is a screw?
Answer:
A screw is like a rolled up inclined plane made up of iron strip.

Question 8.
What is a wedge?
Answer:
A wedge is used for breaking an object into two pieces or to separate objects stuck together.

Question 9.
State examples of wedges.
Answer:
An axle, a knife, a chisel, a needle and a nail are different kinds of wedges.

Question 10.
What is a lever?
Answer:
A lever is a machine made up of 3 parts: effort, load and fulcrum.

Question 11.
What is a fulcrum?
Answer:
The support at which the rod of a lever is rested is called fulcrum of a lever. The lever rotates about the fulcrum.

Question 12.
What is a load?
Answer:
The weight lifted by a lever or the force against which the lever acts is called a load.

Question 13.
What is a load arm?
Answer:
The arm of the lever from the fulcrum to the load is called a load arm.

Question 14.
What is an effort?
Answer:
The force applied on the other end of the rod to lift the load is called an effort.

Question 15.
What is an effort arm?
Answer:
The part of the lever from the fulcrum to the effort is called an effort arm.

Question 16.
What is lever of the first order?
Answer:
The fulcrum is in the centre, the load is at one end while effort is at other end.

Question 17.
What is lever of the second order?
Answer:
The load is in the centre, the fulcrum on one side, and the effort on the other side.

Question 18.
What is lever of the third order?
Answer:
The effort is in the centre, the fulcrum on one side, and the load on the other side.

Question 19.
What is a pulley?
Answer:
A pulley is a device with a grooved wheel and thread designed to lift weights.

Question 2.
How does a pulley help us?
Answer:
If we use a pulley, force can be applied in the downward direction for lifting the weight in an upward direction. It is convenient and easy.

Give scientific reasons:

Question 1.
We use many simple machines in our day-to-day life.
Answer:
Simple machines can be handled easily and there are less chances of these machines breaking down or getting damaged. Hence, we use many simple machines in our day-to-day life.

Question 2.
Less force is required to fit a screw than to hammer a nail.
Answer:

1. A screw is like a rolled-up inclined plane of an iron strip.
2. When a screw is fitted in wood it goes in as if it is going down an inclined plane.
3. Therefore, less force is required to fit a screw than hammer a nail.

Question 3.
Big vehicles easily climb up and down the mountains than a pathway.
Answer:
A winding road or ghat that goes up a mountain is like an inclined plane wrapped around the mountain. It helps big vehicles to climb, up and down the mountain easily.

Question 4.
Oil or lubricant is released between parts of machine.
Answer:
Oil or lubricant is released between parts that rub against each other so that there is less friction between them and wearing is reduced.

Question 5.
Machines are covered when not in use.
Answer:
Machines are covered when not in use to prevent dust settling on them.

Question 6.
How are machines protected from the effect of weather?
Answer:
To prevent the effect of weather, metallic parts in a machine are painted externally and the machines are always kept dry.

Draw the neat and labelled diagram of following:

Question 1.
The screw as an inclined plane.
Answer:

Question 2.
Archimedes’ screw
Answer:

Observe the following diagram and identify the order of lever.

Question 1.
Removing the lid.
Answer:

Question 2.
Picking up an object.
Answer:

Question 3.
Lifting a paper weight.

Answer:

1. Lever of the second order
2. lever of third order
3. Level of first order.

Answer each of the question in brief:

Question 1.
With the help of the diagram explain lever of the 1st, 2nd, 3rd order.
Answer:
1. Lever of the First order: The fulcrum is in the centre, the load is at one end, while the effort is at the other end. e.g. scissors

2. Lever of the Second order: The load is in the centre, the fulcrum on one side, and the effort on the other side. e.g. lid opener

3. Lever of the Third order: The effort is in the centre, the fulcrum on one side, and the load on the other side. e.g. Tongs

Question 2.
How can machines be maintained?
Answer:

1. To maintain machines, all its parts are wiped clean.
2. Oil or lubricant is released between parts that rub against each other.
3. Machines are covered, painted externally and always kept dry.

Question 3.
What is an inclined plane? Explain longer and shorter inclined plane.
Answer:

1. A slanting plank used to lift a weight, is called an inclined plane. Because of inclined plane we will experience less weight and weight lifting become easier.
2. Longer inclined plane: When the inclined plane is longer, the slope is more gradual and lesser is the weight we bear.
3. Shorter inclined plane: When the inclined plane is shorter, the slope is steeper and greater is the weight we bear.

Question 6.
Explain the working of a giant wheel.
Answer:

1. The giant wheel is fitted to a rod at its centre. This rod is called an axle.
2. When the axle starts rotating with the help of electricity the wheel fitted to it starts rotating.
3. This combination of an axle and a wheel is a simple machine.

Observe and discuss:

Question 1.
Name the devices and discuss how they help.

Answer:

1. Needle and thread – Stitching of clothes
2. Wheelbarrow – To carry materials.
3. Opener – To open the lids of bottles.
4. Pulley – To lift bucket
5. Nail cutter – To cut nails
6. Axe – To cut wood into small pieces

Can you tell?

Question 1.
Observe the machines shown in the following pictures. For what purposes are they used? Can you name some other machines of this kind?

Answer:

1. Mixer grinder – To grind the foodstuffs
2. Scooter – To ride and reach places
3. Bicycle – To ride and reach places
4. Sewing machine – To stitch clothes
5. Wheel chair – Specially designed for handicapped patients to move around.

Question 2.
Compare the pathway and a road, available to climb the mountain, the time and strength and your convenience, required to reach the mountain top.
Answer:
We can reach the mountain top by climbing the pathway early than by the road. The time required is less but the strength required is more. The road is easy to walk and more time consuming.

Question 3.
If the point of a needle or the edge of a knife become blunt, then the needle does not penetrate the cloth and the knife does not cut into the fruit. Why is this so?
Answer:
The tip of the needle or the edge of a knife becomes blunt due to regular use. Both the knife and the needle lose their sharpness.

Use your brain power!

Question 1.
Which task can be done using a lever?
Answer:
Task such as using a nut cracker, cutting paper with scissors, can be done using a lever.

Question 2.
Some machines we use in our day to day life are shown in picture. What is the type in each of these?

Answer:

• Wheelbarrow – Lever of the third order
• Pair of tongs – Lever of the first order
• See – saw – Lever of the first
• order Cutter – Lever of the second lever
• Pair of Scissors – Lever of the first order.

Question 3.
When the pedal of the bicycle is rotating, the wheel starts rotating. How does this happen?
Answer:
Pedals of the bicycle are connected to the wheels through the axle, when the axle starts rotating, the wheels also start rotating.

Question 4.
Examples of pulley.
Answer:

1. A simple pulley is used to hoist a flag, to draw water from a well.
2. The crane which is used to lift heavy loads is an example of application of pulleys and levers working together.

Balbharti Maharashtra State Board Class 6 Science Solutions Chapter 13 Sound Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 Science Solutions Chapter 13 Sound

Class 6 Science Chapter 13 Sound Textbook Questions and Answers

1. Fill in the blanks with the proper words.

Question a.
The propagation of sound does not occur through a ………….. .
Answer:
vacuum

Question b.
Noise pollution is a …………… issue.
Answer:
social/serious

Question c.
The sound which is disagreeable to our ears is called …………… .
Answer:
noise

Question d.
Noise has adverse effects on our …………….. .
Answer:
health

2. What should we do?

Question a.
The silencer of a motorcycle is broken.
Answer:

1. If the silencer of a motorcycle is broken, vehicle should be immediately taken to the garage for repair.
2. If silencer is not maintained properly, it will continue making loud noise on the road while in motion, resulting in increasing noise pollution.

Question b.
A factory in the surrounding is producing continuous loud noise.
Answer:
Factories should be located at a proper distance away from residential areas. Authorities should be contacted who will control the decibel level.

3. Write the answers in your own words.

Question a.
What is meant by vibration?
Answer:
Vibration of an object is necessary for the production of sound. As long as the object vibrates, the sound is heard. When the vibration stops, the sound also stops.

Question b.
Explain with the help of practical examples how sound is propagated through solids.

Answer:

1. Singing
2. Chirping of birds
3. Bursting of crackers
4. Whispering
5. Whistling
6. Flute
7. Honking
8. Dog barking

Question c.
What is meant by noise pollution?
Answer:
Continuous noise which has ill effects is called noise pollution.

Question d.
What measures will you take to control noise pollution?
Answer:
Measures for preventing noise pollution:

1. As far as possible, we should avoid blowing horns.
2. The volume of the TV or radio in the house should be restricted to those watching the programmes.
3. Vehicles should be maintained properly to reduce the unnecessary sounds they produce.
4. Factories, airports, railway stations and bus stands should be located at the proper distance away from residential area.
5. Planting of trees helps reduce noise as trees act as a natural barrier.

4. Complete the table.

Question a.

Answer:

Project:

Question 1.
Prepare a list of the harsh sounds mheard near your house. Write about those sounds which produce noise pollution.

Question 2.
Collect information about places where loud noise is prohibited and discuss why it is so.

Class 6 Science Chapter 13 Sound Important Questions and Answers

Fill in the blanks:

Question 1.
Some sounds are ……………… and are heard easily.
Answer:
loud

Question 2.
Some sounds are very ……………… and cannot be heard unless we listen attentively.
Answer:
soft

Question 3.
As long as the object ……………… the sound is heard.
Answer:
vibrates

Question 4.
When the vibration ……………… the sound also stops.
Answer:
stops

Question 5.
The intensity of sound is measured in a unit called ……………… .
Answer:
decibels(dB)

Question 6.
The voice box is located in our ……………… .
Answer:
throat

Question 7.
Sound travels in the form of ……………… through air, water and ……………. .
Answer:
waves, solids

Question 8.
The sound is propagated more clearly through a ……………… than through air.
Answer:
solid

Question 9.
Transmission of sound occurs at a different ……………… through different mediums.
Answer:
speed

Question 10.
Continuous noise which may have ill effects, is called noise ……………… .
Answer:
pollution

Question 11.
Some of the sounds that we enjoy can be a ……………… for others.
Answer:
nuisance

Question 12.
The vibration of an object is necessary for the ……………… of sound.
Answer:
production

Answer in one sentence.

Question 1.
List characteristics of sound.
Answer:
Sounds are soft, loud, pleasant and unpleasant.

Question 2.
What do you mean by unpleasant sounds?
Answer:
The sounds by which we get annoyed are called unpleasant sounds.

Question 3.
What do you mean by loud and soft sounds?
Answer:
The sounds which are heard easily, are loud sounds and the sounds which cannot be heard unless we listen attentively, are soft sounds.

Question 4.
Which movement is exhibited by diaphragm of a speaker and a tabla?
Answer:
Diaphragm of a speaker and a tabla exhibit rapid oscillatory motion which gives rise to vibrations.

Question 6.
What is source of the sound?
Answer:
The object due to which sound is produced is called the source of the sound.

Question 7.
What is acoustics?
Answer:
The science of sound, resonance, production, propagation and effects of sound is called acoustics.

Question 8.
What produces sound in living beings?
Answer:
The vibration of the vocal chords in our larynx or voice box produces sound.

Question 9.
On what does quality of sound depend?
Answer:
Quality of sound produced in the larynx depends upon the tautness of the vocal chords.

Question 10.
How is sound propagated?
Answer:
The sound is propagated in the form of waves through air, water or through a solid.

Question 11.
Why is sound heard more clearly through solids?
Answer:
Transmission of sound occurs at a different speed through different mediums. Transmission of sound is faster through a solid than through a liquid and gas.

Question 12.
What is noise?
Answer:
A loud sound is harsh to ears. Such sounds produce noise.

Question 13.
List the effects of very loud or continuous noise on the people.
Answer:

1. Very loud or continuous noise can cause hearing impairment.
2. This can even lead to deafness.
3. It also causes restlessness, irritability and mental exhaustion.

Question 14.
What is noise pollution?
Answer:
Continuous noise which has ill effects is called noise pollution.

Question 15.
How can we prevent noise pollution with respect to watching TV?
Answer:
The volume of the TV or radio in the house should be restricted to those watching the programmes.

Explain the terms.

Question 1.
Propagation of sound:
Answer:
Sound is said to be propagated when sound waves spread in all directions from a source of sound.

Question 2.
Medium of propagation of sound:
Answer:
The substance around a source of sound through which sound waves spread is called the medium of propagation of sound.

Question 3.
Which sounds do you hear during the recess in the school?
Answer:
During the recess in the school, we hear.

1. laughing
2. students running
3. talking loudly
4. ringing of the bell
5. stamping on the staircase
6. shouting

Question 4.
When there is silence in the classroom, close your eyes and sit quietly. Which sounds in your surroundings can you hear now?
Answer:

1. Loud: Laughing, running, talking, horn of cars, marriage procession, school band, teacher’s voice in next classroom.
2. Pleasant: P.T. teacher’s whistle, chirping of birds.
3. Unpleasant: Shouting, bell ringing, stamping on staircase, dog barking, horns of vehicles.

Question 5.
When a song is being played on a radio or a music system in the house, place your hand on its speaker. What do you feel? Put off the music. What do you feel now?
Answer:

1. When a hand is placed on the speakers of the music system, we feel vibrations on the hand.
2. When music is put off, we don’t feel any vibrations on the hand.

Question 6.
When a metal dish falls on the floor; it makes a loud noise. What do we do to stop the noise? What is the effect of that action?
Answer:
To stop the noise of metal dish falling on the floor, quickly put hand on the dish. Vibrations of the metal dish are stopped and the noise stops.

Question 7.
What is it that vibrates when the sounds of sitar, bell, water tap, and breaking of a saucer, etc. are produced?
Answer:
Strings of the sitar, tongs of the bell, water drops hitting the floor of the basin, pieces of saucers that hit the ground vibrate to produce the sounds.

Question 8.
Take a pot full of water. Strike it lightly on the rim. What do you see? Why are waves formed on the water in the pot?
Answer:

1. We see ripples on the water.
2. When we strike the rim of the pot, our striking causes vibrations. These vibrations are transferred or moved from the pot to the water. Hence, water waves/ripples are seen on the water in the pot.

Question 9.
On rubbing balloon filled with water and another filled with air, of which balloon do we hear a clear or sound?
Answer:
We hear a clearer sound of the water balloon.

Question 10.
If a bell is rung in a vacuum container, will its sound be heard outside?
Answer:
Its sound will not be heard outside.

Observe and Discuss.

Observe the figure and answer the questions.

Question 1.
Which of these sounds is pleasant?
Answer:
The singing of the girl is a pleasant sound.

Question 2.
Which sound is a nuisance to people?
Answer:

1. Boy shouting/screaming.
2. Boy moving/ walking with a toy rattle.

Observe the figure and answer the following.

Question 1.
Make a list of all sounds implied in the picture.

Answer:

1. Chirping of bird outside the house on the tree.
2. Collision of two vehicles – honking of the vehicles.
3. Baby crying.
4. Father talking on the phone.
5. Brother playing in the house – jumping.
6. Sister playing the drum – hitting the drum.
7. Sound of TV.
8. Dog barking.
9. Mother talking to the neighbour.

Question 2.
How would this atmosphere affect a person who is not feeling well?
Answer:
This atmosphere is not convenient for a patient who is ill. He cannot take rest.

Question 3.
Would you be able to study in these conditions?
Answer:
No, students cannot study in this condition. They cannot concentrate on their study.

Balbharti Maharashtra State Board Class 6 Science Solutions Chapter 7 Nutrition and Diet Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 Science Solutions Chapter 7 Nutrition and Diet

Class 6 Science Chapter 7 Nutrition and Diet Textbook Questions and Answers

1. Fill in the blanks:

Question a.
The process of intake of food and utilizing it for all life processes is called ……………. .
Answer:
nutrition

Question b.
All the substances in our food which are useful for various body processes are called ………… .
Answer:
nutrients

Question c.
Carbohydrates and …………. provide …………… to our body.
Answer:
fats, energy

Question d.
In a balanced diet, all the nutrients are present in the ……………. proportion.
Answer:
right

Question e.
In the food pyramid, cereals are given the maximum space because they fulfill our …………… requirement.
Answer:
energy

Question f.
Intake of more food than necessary causes ………….. .
Answer:
overnutrition

2. Spot the following in the table of vitamins and minerals.

Question a.
The nutrient present in citrous fruits.
Answer:
Vitamin C

Question b.
Vitamins/minerals present in milk.
Answer:
Vitamin A, Vitamin B, Vitamin D, calcium, phosphorus.

Question c.
Causes and symptoms of night blindness, scurvy, rickets, beriberi.
Answer:

Question d.
Foods required to prevent the above diseases.
Answer:

Question e.
Causes of anaemia.
Answer:
Deficiency of Vitamin B₁₂, iron.

Question f.
Essential mineral for healthy bones and teeth.
Answer:
Calcium, phosphorus.

Question g.
Sensory organ affected due to the deficiency of Vitamin A.
Answer:
Eyes, skin.

3. Choose the correct alternative. 

Question a.
Pulses are a very good source of ……………. .
(1) carbohydrates
(2) proteins
(3) fats
(4) minerals
Answer:
(2) proteins

Question b.
…………. provide maximum energy to our body.
(1) Cereals
(2) Leafy Vegetables
(3) Water
(4) Amla
Answer:
(1) Cereals

Question c.
Goitre is caused by the deficiency of ……….. .
(1) iron
(2) calcium
(3) iodine
(4) potassium
Answer:
(3) iodine

Question d.
……….. is a type of junk food.
(1) Orange
(2) Milk
(3) Bhakri
(4) Chocolate
Answer:
(4) Chocolate

4. Use the food pyramid to select food items of your choice for three days.
Conditions:
1. The diet for all three days should be balanced.
2. There should be variety in the items chosen for the three days.
Answer:

Day 1:
Cereal like cornflakes and milk, apple, roti, sabzi and dal.

Day 2:
Bread and butter with milk, rice/ roti and chicken, curd, any one type of fruit, salad.

Day 3:
Poha, green vegetable and dal with rice or roti, raita, one fruit, vegetable sandwich.

Activity:

Question 1.
Obtain information on simple methods of spotting the adulteration in foodstuffs and try them out.

Class 6 Science Chapter 7 Nutrition and Diet Important Questions and Answers

Choose the correct alternative:

Question 1.
Vitamin ……………. and vitamin …………….. dissolve easily in water.
(a) A, B
(b) B, C
(c) B, D
(d) B, E
Answer:
(b) B, C

Question 2.
……………. carries oxygen to all parts of the body.
(a) Calcium
(b) Iron
(c) Iodine
(d) Sodium?
Answer:
(b) Iron

Question 3.
Deficiency of vitamin ……………. causes excessive bleeding after an injury.
(a) A
(b) B
(c) K
(d) D
Answer:
(c) K

Question 4.
In accordance with the food pyramid, the proportion of ……………. should be least in our diet.
(a) cereals
(b) fruits
(c) milk
(d) oil
Answer:
(d) oil

Question 5.
……………. is a rich source of vitamin C.
(a) Carrot
(b) Amla
(c) Meat
(d) Milk
Answer:
(b) Amla

Question 6.
Children of growing age need to get approximately ……………. to ……………. calories from the food they eat.
(a) 1500-2000
(b) 3150-4150
(c) 2000-2500
(d) All of them
Answer:
(c) 2000-2500

Fill in the blanks:

Question 1.
All food that we consume during the day is together called our ………. .
Answer:
diet

Question 2.
………….. convert milk into yogurt.
Answer:
Probiotics.

Match the columns:

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

Pick out the odd one:

Question 1.
Chocolate, chapatti, banana, milk
Answer:
Chocolate

Question 2.
Rice, chapatti, carrot, dal.
Answer:
Carrot

Question 3.
Scurvy, Rickets, Beriberi, Goitre.
Answer:
Goitre

Question 4.
Vitamin A, Vitamin C, Vitamin D, Vitamin E
Answer:
Vitamin C

Answer the following:

Question 1.
Why do living things need food and water?
Answer:
Living things take food and water and use them for:

1. Obtaining energy
2. Growth of the body
3. Carrying out day to day functions of the body.
4. Fighting against diseases

Question 2.
Name the main nutrients in our food.
Answer:
There are six main nutrients in our food. They are:

1. Carbohydrates
2. Fats
3. Proteins
4. Fibres
5. Vitamins
6. minerals

Question 3.
How do we get energy from the food?
Answer:

1. We get energy in the form of heat from the food we eat.
2. Heat is measured in kilocalories (calories).
3. Hence, the energy in food items is also measured in kilocalories (calories).

Question 4.
Vitamin C rich food should be eaten raw. Why?
Answer:

1. Vitamin C is very sensitive to heat and light.
2. It is destroyed easily during cooking. Hence, Vitamin C rich food should be eaten raw.

Question 5.
What is balanced diet? Give its significance.
Answer:
A diet containing adequate quantities of all nutrients is called as balanced diet. Significance of a balanced diet are:

1. An increased capacity to work.
2. Good physical and mental health.
3. Increased capacity to fight/resist diseases.
4. Helps in proper growth of the body.

Question 6.
What is obesity? How to avoid obesity?
Answer:

• Obesity is the state of being overweight.
• Junk food eaten frequently causes obesity.
• Obesity is not good for health.

To avoid obesity:

1. Have a balanced diet.
2. Eat whole grains, fruits and vegetables with their skins.
3. Increase use of bicycles.
4. Play more outdoor games.
5. Do not eat if you are not hungry.
6. Do not watch T.V while eating.
7. Avoid precooked, packaged food.
8. Exercise regularly.

Write short notes.

Question 1.
Vitamins:
Answer:
1. Vitamins are vital substances required by our body in small quantities. They help to improve the body’s resistance to diseases. Their deficiency can lead to various diseases, e.g.: deficiency of Vitamin A causes night blindness and that of Vitamin D causes rickets. The sources of vitamins are vegetables, fruits, milk, fish, meat etc.
2. There are two kinds of vitamins – water soluble vitamins and water insoluble vitamins.
3. Vitamin B and Vitamin C are water soluble vitamins because they dissolve easily in water. They are thrown out of the body through the water in sweat and urine. Hence, a regular supply of these vitamins is essential. B₁₇B₂, B₃, B₆, B₉, and Bp are the types of vitamin B.
4. Vitamins A, D, E and K are insoluble in water but are fat soluble vitamins. They get stored in the body.

Question 2.
Probiotics:
Answer:

1. The useful microorganisms which convert milk into yoghurt are present in yoghurt and buttermilk are called probiotics.
2. Lakhs of such useful microorganisms are present in our intestine.
3. They are essential for our health.
4. Hence, to maintain them in our body we should include food rich in probiotics in our daily diet.

Question 3.
Junk food:
Answer:

1. Foods which gives us energy but do not supply the necessary nutrients are called junk food.
2. Foods like chocolate, pizzas, burgers, noodles, fried foods like pakodas are junk food.
3. These foods contain refined flour, sugar and oil in large proportion.
4. If we consume these foods frequently, our body experiences shortage of proteins, vitamins and minerals.
5. This may lead to malnutrition and obesity.

Question 4.
Adulteration of food:
Answer:
To earn more profits, cheaper substances of low quality called adulterants, are mixed with the foodstuffs. The mixing adulterants to foodstuffs is called adulteration of food. Adulterants may be poisonous or harmful and such food is impure and unfit for consumption.
Some of the adulterants added to foodstuffs are given below:

Give scientific reasons:

Question 1.
Deficiency of vitamin B and C are common in our body.
Answer:

1. Vitamin B and vitamin C are water soluble vitamins.
2. They are thrown out of the body through the water in sweat and urine.
3. Hence, a regular supply of these vitamins is essential.
4. If we don’t intake food rich in these vitamins, deficiency occurs.

Question 2.
Exposure to sunlight is essential.
Answer:

1. On exposure to sunlight our body synthesizes Vitamin D from substances in milk, fish, eggs and butter.
2. Its deficiency causes softening of bones (Rickets).
3. Vitamin D helps in absorbing calcium and phosphorous for healthy bones and teeth.
4. Hence, exposure to sunlight is essential.

Complete the tables given below:

1.

2.

3.

Using the food items given below, prepare a balanced diet pyramid.
[Chapatti, banana, carrot, butter, Nan, egg, bread, cheese, dal, spinach, milk]
Answer:

Can you recall?

Question 1.
Which are the various groups of foodstuff? Which main constituents of food do we get?
Answer :
The various groups of foodstuffs are:

1. Milk and milk products, meat, fish, eggs.
2. Cereals and pulses
3. Vegetables and fruits.
4. Fatty substances oil, butter and ghee.

There are six main nutrients in our food: carbohydrates, fats, proteins, fibres, vitamins and minerals.

Question 2.
What trouble do we have to face if we do not get enough fibre from our daily diet?
Answer:
Fibres help in excretion of food, if we do not get enough fibre we will face indigestion and stomach-ache.

Question 3.
What care must be taken to make sure that fibre is not lost or removed from the food we get?
Answer:
We must not over-cook the foodstuff containing fibres. Fruits should be eaten raw.

Balbharti Maharashtra State Board Class 6 Science Solutions Chapter 14 Light and the Formation of Shadows Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 Science Solutions Chapter 14 Light and the Formation of Shadows

Class 6 Science Chapter 14 Light and the Formation of Shadows Textbook Questions and Answers

1. Choose an appropriate word and fill in the blanks.

Question a.
A ……………. is a natural source of light.
Answer:
star

Question b.
A ………….. is an artificial source of light.
Answer:
candle

Question c.
When light passes through a prism, it gets separated into ………….. colours.
Answer:
seven

Question d.
The image obtained in the pinhole camera is …………. .
Answer:
inverted

Question e.
A shadow is formed when an …………… object comes in the way of light.
Answer:
opaque

Question f.
When a ………….. object comes in the way of light, light passes …………… it. options : seven, star, through, transparent, opaque, colors, shape, erect, inverted, luminous, candle.
Answer:
transparent, through

2. Write whether the following objects are luminous or non-luminous.

Question a.

Answer:

3. Match the following.

Question a.

Answer:

4. Write the answers to the following.

Question a.
What things are necessary for the formation of a shadow?
Answer:
Things necessary for the formation of a shadow are:

1. A source of light
2. An object
3. A surface or screen on which the shadow is formed

Question b.
When can an object be seen?
Answer:
We can see an object when reflected rays reach our eyes.

Question c.
What is a shadow?
Answer:

1. If an opaque object comes in the way of a light source, light does not pass through it.
2. As a result the light does not reach a wall or any other surface on the other side of the object.
3. That part remains dark. This dark part is called the shadow of the object.

Project:

Question 1.
Prepare a Newton’s disc.

Question 2.
Find out how to save electricity with the help of the sunlight we receive during the day.

Question 3.
Read a biography of Sir C. V. Raman and find out about the discoveries he made.

Class 6 Science Chapter 14 Light and the Formation of Shadows Important Questions and Answers

Fill in the blanks.

Question 1.
The ……………. is the main natural source of light.
Answer:
Sun

Question 2.
The light emitted by an electric torch is more …………….. than that obtained from a candle.
Answer:
intense

Question 3.
The left and right sides of the original object appear to be …………….. in the mirror.
Answer:
exchanged

Question 4.
The image is as far behind the mirror as the object is in ……………… of it.
Answer:
front

Question 5.
The …………….. of the image is the same as that of the object.
Answer:
height

Question 6.
The materials through which light passes is said to be …………… .
Answer:
transparent

Question 7.
The materials through which light does not pass is said to be ………….. .
Answer:
opaque

Question 8.
The materials through which light passes partially is said to be ………….. .
Answer:
translucent

Question 9.
If an ………….. object comes in the way of a light source, light does not pass it.
Answer:
opaque, through

Question 10.
The shadow of an object formed due to sunlight is ………….. in the mornings and evenings and ……………. in the afternoon.
Answer:
long, short

Question 11.
The shadow of an object is formed only when ………….. does not pass through the object.
Answer:
light

Question 12.
Stars are ………….. .
Answer:
luminous

Question 13.
Planets, satellites are ………….. .
Answer:
non-luminous

Question 14.
The largest sundial is at ………….., New Delhi.
Answer:
Jantar Mantar

Question 15.
………….. is celebrated as National Science Day.
Answer:
28th February

Question 16.
Light travels in a straight line. This is called ………….. .
Answer:
linear propagation of light

Question 17.
The image formed on the diaphragm of the pinhole camera is ………….. .
Answer:
inverted

Question 18.
The kind of shadow an object forms depends upon the ………….. between the ………….., the object and the ………….. or the ………….. on which the shadow is formed.
Answer:
relative distance, source of light, surface, screen

State whether following statements are True or False.

Question 1.
Light travels in a straight line.
Answer:
True

Question 2.
Stars are luminous.
Answer:
True

Question 3.
Image in a pinhole camera is inverted.
Answer:
True

Question 4.
In the afternoon, shadows are long.
Answer:
False

Question 5.
Fireflies are a natural source of light.
Answer:
True

Question 6.
We see the candle clearly when we bend the tube.
Answer:
False

Question 7.
We can see our image clearly in running water.
Answer:
False

Question 8.
Tracing paper is transparent.
Answer:
False

Question 9.
The light obtained from an electric torch is more intense than that obtained from a candle.
Answer:
True

Question 10.
28tn February is celebrated as “National Science day” since 1987 in India.
Answer:
True

Question 11.
Classify the following into natural and man-made/artificial sources of light. (tubelight, light bulb, torch, burning candle, the sun, fireflies, anglerfish, honey mushroom, stars in the night sky, oil lamps, lanterns)
Answer:

Question 12.
Identify the transparent, opaque and translucent objects from among the following. (piece of glass, wax paper, tinted glass, oil paper, white plastic, a tea kettle, a notebook, cloth, water, a wooden cupboard, sheet of notebook.)
Answer:

Question 13.
Classify the following into the type of images they form: Clear image, faint image, no image. (still clear water, cemented wall, wooden surface, new steel dish, flower, glossy granite cladding of a wall, mirror, butter paper).
Answer:

Question 14.
Relate images formed with the surfaces.
Answer:

1. The clear images are formed on plane surfaces.
2. Faint or no images are formed on rough surfaces.

Answer in one sentence.

Question 1.
What are luminous objects?
Answer:
The objects which emit light i.e. which themselves are a source of light, are called luminous objects.

Question 2.
What determines the intensity of light?
Answer:
The intensity of light is determined by the extent to which the objects emit light.

Question 3.
What are non-luminous objects?
Answer:
The objects that are not sources of light themselves are called as non-luminous objects.

Question 4.
What are artificial sources of light?
Answer:
Man-made objects which emit light are artificial sources of light.

Question 5.
What are natural sources of light?
Answer:
Natural substances, materials which emit light are called natural sources of light.

Question 6.
What is linear propagation of light?
Answer:
Property of light travelling in a straight line is linear propagation of light.

Question 7.
What is reflection of light?
Answer:
The rays of light falling on an object from a source of light are thrown back from the substance of that object. This is reflection of light.

Question 8.
How do we see objects around us?
Answer:
The rays of light falling on an object from a source of light are thrown back from the surface of that object. This is called reflection of light. We see the object when the reflected rays reach our eyes.

Question 9.
What is moonlight?
Answer:
Sunlight reflected from the surface of the moon reaching us, in which we see the moon is called the moonlight.

Question 10.
What type of image is formed in the mirror?
Answer:
The image formed in the mirror is ‘laterally inverted’ i.e. right side appears as left side and left side appears as right side.

Question 11.
What change do you see in the image if you decrease or increase your distance from the mirror?
Answer:
When the distance between object and mirror is increased the size of image decreases where as, when the distance is decreased the image size increases.

Question 12.
What difference do you find in the height of the image in the mirror and yourself?
Answer:
The size of the image in the mirror is the same as that of the object.

Question 13.
What is the image on the diaphragm of the pinhole camera?
Answer:
An inverted or an upside down image of the candle is seen on the diaphragm of the pinhole camera.

Question 14.
What do you mean by transparent object?
Answer:
The objects / materials through which light passes are said to be transparent.

Question 15.
What do you mean by opaque materials?
Answer:
The materials through which light does not pass are said to be opaque.

Question 16.
What do you mean by translucent materials?
Answer:
The materials through which light passes partially are said to be translucent.

Question 17.
How is the shadow in the morning, afternoon and evening?
Answer:
The shadows are long in the mornings and evenings and short in the afternoon.

Question 18.
What is shade of a tree?
Answer:
The shade of a tree is its shadow.

Question 19.
How many colours is sunlight made up of?
Answer:
Sunlight is made up of seven colours.

Give reasons for the following.

Question 1.
When we see in the mirror, we see our image in the mirror.
Answer:
When we see our face in the mirror, the light reflected from our face falls on the mirror and gets reflected back again. Hence, we see our image in the mirror.

Question 2.
Opaque materials cast shadow.
Answer:
An opaque material does not allow light to pass. Hence, it casts a shadow.

Question 3.
Transparent and translucent object do not cast a shadow.
Answer:
Translucent objects cast a faint shadow whereas transparent objects do not cast a shadow at all because they allow light to pass through them.

Use your brain power!

Question 1.
Why is the image on the diaphragm of the pinhole camera inverted?
Answer:
1. The pinhole camera works on the principle of light travelling in a straight line.
2. The rays of light from the candle flame go in all directions.
3. We consider only two rays that pass through the hole and fall on the screen.

4. The rays intersect at the pinhole.
5. Since the rays cross over at that point, the top of the object appears at the bottom of the image and the bottom of the image appears at the top. Thus, we see an inverted image of the candle.

Question 2.
How will you light up a dark room using reflected light?
Answer:
Focusing on the wall with torch light. Mirrors or reflectors can be used to get light from outside.

Question 3.
Try to start the TV by operating the remote control from behind it.
Answer:
T.V will not start.

Question 4.
In which step is the flame of the candle seenclearly? Why?

Answer:
In step 1 the flame of the candle is seen clearly because light travels in straight line.

Can you tell?

Question 1.
Can we see anything in total darkness?
Answer:
No, we cannot see anything in total darkness.

Question 2.
What helps us to see the objects around us?
Answer:
Reflected light helps us to see objects around us.

Question 3.
What does the light in each one of the pictures originate form?
Answer:

1. Bulb
2. Firefly
3. Candle
4. Sun

Question 4.
Name the natural sources of light.
Answer:
Sun, Fireflies

Question 5.
In which objects do we see our reflection?
Answer:
All objects reflect light rays, but the best reflectors of light are mirrors, still water in a lake, new steel dish i.e. smooth shiny surfaces.

Question 6.
What difference do you notice on looking through the windows in the picture? What causes the difference? The picture shows transperant, opaque, translucent window panes. Spot them.

Answer:

1. Through the first window we can see a clear picture of things outside.
2. Second window gives a faint image.
3. Through the third window, we can’t see anything
4. The difference in the image is due to the material of the window panes.
5. The first window pane is transparent.
6. The second window pane is translucent.
7. The third window pane is opaque.

Answer the following questions in brief.

Question 1.
List factors on which shadow depends.
Answer:
Shadow depends on relative distance between the source of light, the object and the surface on which the shadow is formed.

Question 2.
How we can see that light travels in straight line.
Answer:

1. In the morning or in the afternoon, rays of light enter a slit in a door, window or a small hole in the roof.
2. As these rays of light from the slit or the hole move towards the floor, the dust particles in their way are clearly seen.
3. Due to these particles, the path of light becomes visible to us.
4. Thus we can see that their path is along straight lines.

Question 3.
What is the difference between an object and its reflection? What causes the difference?
Answer:

1. Object and its reflection result in formation of images.
2. Reflections taking place from highly polished metals, mirrors, still water etc, form clear images.
3. Reflections taking place from wooden surface, flower, book form dull, blurred images.
4. The difference in reflections is caused by the surface of the object.
5. Regular reflections have smooth, polished surfaces, hence, image is clear.
6. Diffused reflections have hard, rough surfaces, hence, image is dull.

Question 4.
List characteristics of images in a plane mirror.
Answer:

1. The left and right sides of the original object appear to be exchanged in the mirror image.
2. The image is as far behind the mirror as the object is in front of it.
3. The size of the image is the same as that of the object.

Question 8.
State the characteristics of image formed by a pinhole camera.
Answer:
Characteristics of an image formed by a pinhole camera are as follows:

1. It is inverted/upside down.
2. It can be obtained on a screen – real image.

Try this.

Question 1.
Make your friend stand in between the torch and the wall. What happens?
Answer:
Friend’s Shadow forms on the wall.

Question 2.
Place a glass filled with water on a sheet of paper in the window so it receives direct sunlight. What is seen on the paper?
Answer:
We see rainbow colours on the paper.

Question 3.
Can we do the same in a dark room with the help of a prism and a torch? What do we learn from this?
Answer:
yes, we can. Light gets seperated into seven colour. From this we learn that white light contains seven colours.

Question 4.
If you dip the wire loop in the soap water and then blow it, soap bubbles are formed. Are the beautiful colours of the rainbow seen in these bubbles?
Answer:
Yes, splitting of white light into different colours takes place.

Question 5.
What do you see on holding a CD in the sun?
Answer:
CD reflects rainbow colours, and interesting : patterns.

Question 6.
Raise your right hand. In mirror which hand of the mirror image is raised?
Answer:
Left hand of the mirror image is raised.

Question 7.
Is there any difference between your height and height of the mirror image?
Answer:
The height remains the same.

Balbharti Maharashtra State Board Class 6 Science Solutions Chapter 6 Substances in Daily Use Notes, Textbook Exercise Important Questions and Answers.

Maharashtra State Board Class 6 Science Solutions Chapter 6 Substances in Daily Use

Class 6 Science Chapter 6 Substances in Daily Use Textbook Questions and Answers

1. Fill in the blanks using proper works:

Question a.
Rubber made by vulcanization is a …………… material.
Answer:
hard

Question b.
Man-made materials are made by …………… natural materials.
Answer:
processing

Question c.
…………… thread was developed simultaneously in New York and London.
Answer:
Nylon

Question d.
Rayon is also known as …………… .
Answer:
synthetic silk

2. Answer the following questions. 

Question a.
Why did the need for man-made materials arise?
Answer:
The need for man-made materials arose due to the following reasons:

1. To meet the needs of an increasing population.
2. Human nature to try to make life more comfortable.
3. They can be made available in plenty at a low cost.
4. The reserve of natural substances is decreasing.

c

Question b.
Which are the natural materials obtained from plants and animals?
Answer:
Leather, jute, wool, cotton, silk are the natural substances obtained from plants and animals.

Question c.
What is vulcanization?
Answer:

1. Vulcanization is the process in which rubber is heated with sulphur for three to four hours.
2. Sulphur is mixed to give hardness to rubber.
3. The proportion of sulphur depends on the purpose for which the rubber is to be used.

Question d.
Which natural materials are used to obtain fibres?
Answer:
Cotton, wood pulp and various hydrocarbons obtained from mineral oils are used to obtain fibres.

3. What are we used for?

Question a.
What are we used for?
Answer:

1. Soil: It supports plant life and hence indirectly supports all living things. It is used for making clay pot, utensils, bricks etc.
2. Wood: It is used in paper industry. It is also used to make furniture.
3. Nylon: It is used to manufacture clothes, fishing nets, ropes, etc.
4. Paper. It is used in our textbooks, note books, currency notes, etc.
5. Rubber: It is used in the manufacture of erasers, tyres, rubber toys, rubber bands, etc.

4. How is paper manufactured? Write in your own words.

Question a.
How is paper manufactured? Write in your own words.
Answer:
Coniferous trees like pine trees are used to make paper.

1. The bark of the logs of these trees is first removed and the wood is broken into small pieces.
2. The mixture of these pieces with some chemicals is kept soaked for a long time to form pulp.
3. On completion of chemical process, fibrous substances from wood pulp are separated and some dyes are added.
4. The pulp is then passed through rollers, dried to form paper and finally wound on reels.

5. Give scientific reasons.

Question a.
We must use cotton clothes during summer.
Answer:

1. During summer we sweat more due to high temperature.
2. Cotton clothes absorb sweat.
3. Synthetic clothes are water repellent. They do not absorb sweat and we feel uncomfortable. Hence we must use cotton clothes in summer.

Question b.
We must observe economy in the use of materials.
Answer:

1. Due to excessive use of natural substances by human beings to fulfil their needs; they are getting depleted at a faster rate.
2. At the same time, it takes a very long time for these substances to get naturally formed again.
3. Hence, we must observe economy in the use of materials so that they are available for the future generation also.

Question c.
Saving paper is the need of the hour.
Answer:

1. Saving paper means saving trees as wood is used as the raw material to manufacture paper.
2. Trees are natural habitat for many Living things.
3. Trees help in increasing rainfall and water availability. Hence, saving paper helps in saving trees which in turn maintains balance in nature.

Question d.
Man-made materials have more demand.
Answer:

1. Man-made substances are waterproof, lightweight and easy for transportation.
   Substances in Daily Use
2. They are easier to use and can be made available in plenty at a low cost.
   Hence, there is more demand for man-made materials.

Question e.
Humus is a natural material.
Answer:

1. Humus is obtained from plant and animal wastes.
2. Micro-organisms act on these wastes and convert them into humus.
3. Hence, humus is a natural material.

6. Find out.

Question 1.
How is lac obtained from nature?
Answer:

1. Lac is a resinous substance secreted from the glands present in the skin of female lac insect.
2. Lac insects live on the Palash trees. In India lac is mainly produced in the states of Rajasthan and Bihar.

Question 2.
How are pearls obtained?
Answer:

1. Pearls are formed when a foreign particle such as a grain of sand or a small particle of rock accidentally enters the space between the mantle and shell of an oyster’s body.
2. Oysters cannot reject the particle, and as a defence mechanism its produces a shining coating called nacre on the particle layer by layer.
3. As the shiny layers get added, a pearl is formed.
4. Cultured pearls are artificially formed by inserting a bead in oyster shell and allowed to coat it with nacre over several years.

Activity:

Question 1.
Visit a rubber, paper or textile industry in your area and collect information about it.

Question 2.
Collect various samples of paper and note their uses.

Question 3.
Use blank pages from old note-books and make a new one.

Class 6 Science Chapter 6 Substances in Daily Use Important Questions and Answers

Fill in the blanks using proper works.

Question 1.
Natural rubber is obtained from …………… of trees.
Answer:
latex

Question 2.
Changes where the original constituent substances cannot be obtained again from the new substances are called …………… changes.
Answer:
irreversible

Question 3.
A paper factory in Maharashtra is situated at …………… .
Answer:
Ballarpur

Question 4.
Glass can be made from …………… and …………… .
Answer:
sand, calcium

Question 5.
Botanical name of rubber plant is …………… .
Answer:
Hevea brasiliensis

Question 6.
…………… obtained from mineral oils are used to make polymer chains.
Answer:
Hydrocarbons

Question 7.
The maximum production of rubber in India is in …………… .
Answer:
Kerala

Question 8.
…………… invented the process of vulcanisation.
Answer:
Charles Goodyear

Match the columns:

Question 1.

Answer:

State whether the following statements are ‘true’ or ‘false’.

Question 1.
We can find plastic in nature.
Answer:
False

Question 2.
Soap is a man-made substance.
Answer:
True

Question 3.
We should reuse available resources.
Answer:
True

Question 4.
Nylon clothes are good summer wear.
Answer:
False

Question 5.
Glass is a man-made substance.
Answer:
True

Question 6.
In irreversible changes original substances can be obtained again.
Answer:
False

Question 7.
Rayon is made up of cotton and wood pulp.
Answer:
True

Give two examples of each of the following:

Question 1.
Natural fibres
Answer:
cotton, silk

Question 2.
Synthetic fibres
Answer:
terylene, rayon

Question 3.
Biotic natural substances
Answer:
wool, jute

Question 4.
Abiotic natural substances
Answer:
air, water

Question 5.
Man-made substances.
Answer:
paper, glass

Classify the following substances in the table given below.
(iron, wood, brick, paper, terylene, stone, jute, air, silk, utensils, plastic, rayon, water, wool, dacron, lac, nylon, pearl)
Answer:

Define:

Question 1.
Natural substances.
Answer:
Substances available in nature are called natural substances.

Question 2.
Man-made substances.
Answer:
Man-made substances are new substances produced by processing naturally available resources.

Question 3.
Biotic substances.
Answer:
Natural substances obtained from living things are called biotic substances.

Question 4.
Abiotic substances.
Answer:
Natural substances that are not obtained from living things are called abiotic substances.

Question 5.
Plant-originated substance.
Answer:
A substance obtained from a plant is called a plant-originated substance.

Question 6.
Animal-originated substance.
Answer:
A substances obtained from an animal is called an animal-originated substance.

Question 7.
Hydrocarbons.
Answer:
Substances obtained from mineral oil are called hydrocarbons.

Answer the following in one or two sentences.

Question 1.
Why was Rayon named so?
Answer:
The threads of Rayon have shine and strength. They appeared to be shining bright like the sun’s rays. Hence, they were named ‘Rayon.

Question 2.
How are TV sets, refrigerators, etc. packed? Why?
Answer:
To pack TV sets, refrigerators, etc. big cartons and thermocol are used. These man-made substances are water resistant, light weight and easy for transportation.

Question 3.
Give the properties and uses of nylon.
Answer:
Nylon threads have a shine and are strong, transparent and water resistant. They are used to manufacture clothes, fishing nets, ropes, etc.

Question 4.
What is latex?
Answer:
Latex is a milky white natural substance produced in the stems of rubber trees.

Question 5.
Name the basic material used to obtain paper.
Answer:
Wood is the basic material used in the manufacture of paper.

Question 6.
What kind of paper is used for currency notes manufacturing?
Answer:
Flax fibre is used in the manufacture of currency notes.

Question 7.
Where was the process of making paper invented?
Answer:
The process of making paper was invented in China.

Answer in brief:

Question 1.
What are the advantages of synthetic fibre?
Answer:
Advantages of synthetic fibre are:

1. These fibres can be manufactured on a large scale.
2. They cost less.
3. They are strong and durable.
4. They can be used for a long time.
5. They are water repellent. They dyy easily.
6. They are light weight and comfortable to wear.
7. Clothes made from these threads are wrinkle free and scratch free.

Question 2.
Give the shortcomings of synthetic fibre.
Answer:

1. They are water repellent. Hence, they do not absorb sweat from the skin.
2. Continuous use of these clothes keeps the skin moist which may cause skin diseases.
3. Synthetic clothes are uncomfortable to wear especially in summer.
4. They catch fire easily.
5. If they catch fire, they stick to the skin and cause skin injuries.
6. These fibres are not decomposed by micro-organisms.

Question 3.
Write a short note on natural rubber.
Answer:

1. Rubber is a natural substance obtained by collecting the latex of certain trees.
2. The botanical name of this tree is ‘Hevea brasiliensis’
3. In India, the maximum production of rubber is in Kerala.

Question 4.
What are dacron, terylene and terene?
Answer:

1. Dacron, terelyne and terene are synthetic fibres prepared from hydrocarbons.
2. Various hydrocarbons obtained from mineral oil are used to make polymer chains.
3. A solution of such polymer is pressed through a strainer with fine holes.
4. The fibre formed after cooling are long and unbroken threads.
5. These threads have been named as dacron, terylene and terene.

Give scientific reasons:

Question 1.
Natural substances are depleting.
Answer:

1. Due to increase in population there is an increase in demand. To meet this demand, natural substances are used to a greater extent.
2. Due to human nature to make his life more comfortable, he learnt to use natural resources and also began to process them to make new substances. Hence natural substances are depleting at an alarming rate.

Can you tell?

Question 1.
Difference between leather, jute, wool, cotton and soil, water, metals.
Answer:

1. Leather, jute, wool are biotic natural substances.
2. Soil, water, metals are abiotic natural substances.

Question 2.
How are leather and wool different from jute and cotton?
Answer:
Leather and wool are obtained from animals while jute and cotton are obtained from plants.

Question 3.
Do you find plastic, nylon, brass or cement in nature?
Answer:
No, they are all man-made materials.

Question 4.
Can red chillies become green chillies again?
Answer:
No, the change from green chillies to red chillies is irreversible.

Question 5.
From which substances in nature can we get threads or fibre?
Answer:
Cotton plant, jute, silkworm.

Question 6.
What are clothes made from?
Answer:
Clothes are made from yarn obtained from fibre.

Classify the following substances according to their uses:
sand, soap, wool, window glass, bamboo, cotton, bricks, silk, leafy vegetables, cement, fruits, water, sugar.
Answer:

• For construction: Sand, window glass, bamboo, bricks, cement.
• As food: Leafy vegetables, fruits, water, sugar.
• At home: Soap for cleaning.
• For clothes: Wool, cotton, silk.

Make a list of objects, each of which can be made from several substances.
Answer:

Use your brain power!

Question 1.
Complete the table below, showing how substance of daily use are classified.

Answer:

1. Natural
2. Biotic
3. Cement
4. Animal Origin
5. Cotton