CLASS - 5 // SUBJECT - EVS // CHAPTER - 11 // SUNITA IN SPACE //

 

Chapter 11 Sunita In Space

1.    If the earth is round like a globe, how is it that we do not fall off?
Ans. The gravitational force of the earth attracts everything towards itself. That is why we do not fall off.

2.    Do the people in Argentina stand upside down?

Ans. No, they also stand ‘up’ like us. The sense of up and down on the earth is relative.

3.    Can you think why Sunita’s hair was standing?
Ans. When we are on the earth, our hairs remain in downward position because of the gravitational force of the earth. Once some is in space, the hairs stand as there is zero gravity in space.

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

Date	event
9/12/2006	The spacecraft is taking off
11/12/2006	Astronauts are floating inside the spacecraft
11/12/2006	Astronauts are taking food
13/12/2006	Sunita is working
16/12/2006	Sunita is roaming outside the spacecraft

 

5.    

Think why water flows downwards on any slope? On mountains too water flows downwards, not upwards?
Ans. Water flows downwards because of the force of gravity of the earth.

 

6.       Do you think Sunita could make out Pakistan, Nepal and Burma separately, when she saw the earth from space?
Ans. No, I think she could not make out these countries when she saw the earth from space.

 

7.       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 24th of this month. It will rise just after the sunset. The full moon looks like a complete circle.

 

8.       What are the festivals related to the moon?
Ans. Many festivals are related to moon; like Holi, Eid, Karwa Chauth, etc.

 

9.       At night look at the sky carefully for five minutes.
(а) What could you see?
Ans. I could see the moon and the stars.
(b) Did you see anything moving in the sky? What do you think it could be? A star or a shooting star 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. The thing which appears to cross the sky quickly is a shooting star. The satellite looks like a moving tiny dot which appears to move very slowly.

10. If you saw the moon rising at 7 pm today, would you see it at the same time tomorrow?
Ans. No, I would not see the moon at the same time tomorrow.

11. On 31 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. During the day, the sunlight is too much and hence we are unable to see the moon or stars.

12. Why do children always slide down the slide and not slide up? If this slide were there in Sunita’s spacecraft, would children slide like this? Why?
Ans. Children always slide down the slide and not slide up because of the gravitational force of the earth. If this slide were in Sunita’s spacecraft, then children would not be able to enjoy the slide because of zero gravity in the spacecraft.

13. Why do we see stars mostly at night?
Ans. There is no sunlight during the night. As a result the light from stars is not hidden by the sun’s glare and we are able to see them at night.

14. Looking at the earth from the space, Sunita said, “Different countries cannot be seen as separate from here. These lines are on paper. They are made by us”. What do you understand by this?
Ans. Boundaries between nations are created by humans. The nature has made a single earth where there is no boundary. All of us are same, ‘The inhabitants of the earth’.