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प्रश्न
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?
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उत्तर
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.
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संबंधित प्रश्न
Can you think why Sunita’s hair was standing?
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!

- Can you find India?
- Where all do you find the sea?
- Which countries can you see?
- Can you see some of the countries with which India plays cricket matches? For example England, Australia, Pakistan, Bangladesh, and South Africa.
- What else can you see on the globe?
What are the festivals related to the moon?
Given below are the times at which the moon rises and sets in Delhi (on the given days).
| Date |
Time of moonrise (hours: minutes) |
Time of moon (hours: minutes)set |
| 28-10-2007 | 19:16 | 08:50 |
| 29-10-2007 | 20:17 | 10:03 |
| 30-10-2007 | 21:22 | 11:08 |
| 31-10-2007 | 22:29 | 12:03 |
- 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 moonrise (as compared to 28 October).
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?

Why do we see stars mostly at night?
Looking at 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?
Why don’t you try to do the same with a coin? How many centimeters away from the eye did you keep the coin to hide the moon?
If you saw the moon rising at 7 pm today, would you see it at the same time tomorrow?
