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प्रश्न
Think why water flows downwards on any slope. On mountains, water flows downwards, not upwards.
उत्तर
Water flows downwards because of the force of gravity on the earth.
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संबंधित प्रश्न
If the earth is round like a globe, how is it that we do not fall off?
Do the people in Argentina stand upside down?
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?
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?
- Can you find the state in which you live? Write its name on the map.
- Which are the states next to the state you live in?
- Have you been to any other state?
- Shahmir thinks that there are lines drawn on the ground between the states. What do you think?
Do you think the moon is flat like the coin or round like a ball?
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).
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.
If you saw the moon rising at 7 pm today, would you see it at the same time tomorrow?
