Sunita in Space NCERT Solutions - EVS Class 5

 Straight from the Heart

1. What do you think the earth looks like? Make a drawing of the earth in your notebook. 

Ans. The earth looks like a sphere in shape. 

Earth is spherical in shape

What do you think

2. If the earth is round like a globe, how is it that we do not fall off?

 Ans. It is due to the earth’s gravitational force. Earth attracts everything towards its centre. That is why we do not fall off.

3. Do not people in Argentina stand upside down?

Ans. No they don’t stand upside down. There is no concept like standing upwards or downwards, everything is relative. 

Look at the photograph and write 

1. Can you think why Sunita’s hair was standing?

Ans. We know that on earth, our hair remains in a downwards portion due to the earth’s gravitational force. But in space, there is no such gravitational force. That is why Sunita’s hair was standing.

5. Look at Sunita’s photographs and the dates written on each of them. Write what is happening and when.

Ans. 

Classroom becomes a spaceship

Q1. Close your eyes. Imagine that your class is a spaceship. Zooo…m – in 10 minutes you have entered space. Your spaceship is now going around the earth. Now say:

– Are you able to sit in one place?
Ans: No I am not able to sit in one place, everyone seems floating inside the spacecraft.

– What about your hair?
Ans: My hair too seems standing up.

– Oh, look … where are your bags and books going?
Ans: My books and bags are floating inside the spacecraft.

– And what is your teacher doing? Where is her chalk?
Ans: My teacher too is floating inside the spacecraft and trying to catch the chalk which is also floating.

– How did you eat your food during the break? How did you drink water? What happened to the ball that you threw up?
Ans: To eat the food we had to grab the food items and have them. The water was in the form of blobs we had to suck them in. The ball which we threw up was also floating.

Isn't it Amazing 

1. Can you now say why Sunita’s hair kept standing?

Ans. Sunita’s hair kept standing because there is no gravitational pull in space.

2. Think why water flows downwards on any slope? In mountains too water flows downwards, not upwards?

Ans. Water flows downwards on any slope or on mountains due to the gravitational force acting upon it.

Magic 1 – A tiny paper races a coin

1. Take a 5 rupee coin and a small piece of paper. The paper should be about one-fourth the size of the coin.
– Hold the coin in one hand and the paper in the other. Drop them at the same time. What happened?
– Now place the tiny paper on the coin and drop them. What happened this time? Surprised!
Ans. When dropping the coin in one hand and the paper in the other, the coin reaches the ground faster than the paper.
When placing the tiny paper on the coin and dropping them together, both reach the ground at the same time.

Magic 2 – A mouse lifts an elephant

1. To play this you will need a small stone, a bigger stone (lemon-sized), a thick roll of paper (which can be made with layers of paper), a mouse and an elephant made of paper.
– Take a string about 2 feet long.
– At one end of the string tie the small stone. Stick or tie the mouse to the stone.
– Put the string into the roll of paper.
– At the other end of the string tie the bigger stone and stick the elephant.
– Hold the roll of paper and move your hand to rotate the small stone.
– Who is pulling whom? You will be surprised! The mouse lifts the elephant!
How did this magic happen?
Ans. When the small stone i.e., the mouse rotates, it creates a force due to which the bigger stone i.e., the elephant is being pulled up.

 Look at this photograph and tell 

1. Can you see India?

Ans. Yes, I can see India in the picture but not very clearly.

2. Can you recognize any other place?

Ans. It is very difficult to recognize any other place exactly.

3. Where is the sea?

Ans. The blue part of the picture is the sea.

4. Do you find anything similar between the globe and this picture of the earth? In what way are they different?

Ans. The similarity is both cases the land and the sea areas can be distinguished. However, the entire land area is divided into various countries on the globe which is not so in the case of this picture of the earth.

5. Do you think Sunita could make out Pakistan, Nepal and Burma separately when she saw the earth from space?

Ans. No, it is difficult to identify these countries, since no particular country can be visible from space. 

Look at the globe in your school and tell 

 1. Could you find India?

Ans. Yes.

2. Where do you find the sea?

Ans. The blue parts of the globe are seas.

3. Which countries can you see?

Ans. I can see all countries like India, Pakistan, China, Bangladesh, Sri Lanka, Indonesia, Singapore, USA, Russia, France, Britain, Germany, Mexico etc.

4. Can you see some of the countries with which India plays cricket matches? For example: England, Australia, Pakistan, Bangladesh and South Africa.

Ans. Yes, I can see all these countries.

5. What else can you see on the globe?

Ans. Apart from sea and countries, I can see islands, mountains etc. on the globe. 

Look at the map of your country and tell 

1. Can you find the state in which you live? Write its name on the map.

Answer: Yes I can find Delhi the place I live in.

20. Which are states next to your states?

Ans. Delhi is between Haryana and Uttar Pradesh.

3. Have you been to any other state?

Ans. Yes. I have been to many states like Uttar Pradesh, Haryana, Punjab, Himachal Pradesh etc.

4. Shahmir thinks that there are lines drawn on the ground, between the states. What do you think?

Ans. There is no such line made on the ground, between the states. It’s all on the map only.

Look at the sky 

1. Why don’t you try to do the same with a coin? How many centimetres away from the eye did you keep the coin to hide the moon?

Ans. To hide the moon completely, the coin has to be kept at 25 centimetres away from the eye.

Think

 1. Do you think the moon is flat like a coin or round like a ball?

Answer: I think the moon is round like a ball.

2. Look at the moon tonight and draw what it looks like. Look and draw again after one week, and then after 15 days. 

Ans. 

The different phases of the moon are

Find Out

1. When is the next full moon? At what time will the moon rise on this day? What does the moon look like on this day? Draw it.

Ans. The next full moon is on the 8^th of this month. It rises just after the sun sets. The moon looks like a complete white circle. 

2. What are the festivals related to the moon?

Ans. There are many festivals related to the moon like Eid, Karwachauth etc.

3. At night look at the sky carefully for 5 minutes. What could you see?

Ans. I could see the moon, stars, etc.

4. Did you see anything moving in the sky? What do you think it could be? A star or a shooting or a satellite (satellites are used for the TV, telephones, and for weather reports). Find out more about this.

Ans. Yes, I saw something moving in the sky. It may be a meteorite, which is also called a shooting star. These are the bodies moving around in space that then enter the earth’s atmosphere, and catch fire. Thus, they look bright, when entering the earth’s atmosphere. Thus, they look bright.

Look at the table and Tell

1. Given below are the times at which the moon rises and sets in Delhi (on the given days).

 – On 28 October the moon came out at ___ minutes past ___ o’clock.

– On 29 October the moon came out at ___ minutes past ___ o’clock.
– On 29 October there was a difference of ___ hours and ___ minutes in the time of the moon rise (as compared to 28 October).

Ans. – On 28 October the moon came out at 16 minutes past 7 o’clock.
– On 29 October the moon came out at 17 minutes past 8 o’clock.
– On 29 October there was a difference of 1 hour and 1 minute in the time of the moon's rise (as compared to 28 October).

2. If you saw the moon rising at 7 pm today, would you see it at the same time tomorrow?

Ans. No, the moon rises at different times on different days. 

3. On 31 st October the time of setting of the moon is given as 12:03. Have you ever seen the moon at 12 in the afternoon? Why don’t we easily see the moon or stars during the day?

Ans. No, I have never seen the moon at 12 in the afternoon. We don’t early see the moon or stars during the day because of the sunlight.

An Interesting Photograph

1. A spaceship went to the moon. This photograph of the earth was clicked from the surface of the moon. See how the earth is looking. Can you see the surface of the moon? Do you have some questions after looking at this picture? Write down those questions and discuss them in class.
Ans. Yes, I can see the surface of the moon is clearly visible. There are a few questions running through my mind:

• Who clicked this picture?
• How could they land on the moon?
• How was their experience seeing the earth from the moon?
• Does water or air exist on the moon? 

What we have Learnt

1. Why do children always slide down the slide and not slide up? If this slide were there in Sunita’s space, would children slide like this? Why?

Ans. Children always slide down the slide because of the earth’s gravitational force. However, if this slide were there in Sunita’s spacecraft, children would not slide like this because there is no gravitational force in space.

2. Why do we see stars mostly at night?

Ans. Stars are mostly seen at night because there is no sunlight at night. Thus, the light coming from the stars could reach us and we are able to see them.

3. Looking at the earth from space, Sunita said, “Different countries cannot be seen as separate from her. These lines are on paper. They are made by us. What do you understand by this?

Ans. Sunita wanted to say that the land on earth is divided into different countries just on paper. It is actually in our minds. There is no such differentiation in reality. Earth is all intact. So, looking at earth from space, the earth looks quite different.