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प्रश्न
If the earth is round like a globe, how is it that we do not fall off?
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उत्तर
The gravitational force of the earth attracts everything towards itself. That is why we do not fall off.
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संबंधित प्रश्न
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?
- What about your hair?
- Oh, look … where are your bags and books going?
- what is your teacher doing? Where is her chalk?
- How did you eat your food during the break? How did you drink water? What happened to the ball that you threw up?
Think why water flows downwards on any slope. On mountains, water flows downwards, not upwards.
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?
- 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?
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.
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 the class.
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 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?
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?
