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प्रश्न
Can you think why Sunita’s hair was standing?
उत्तर
When we are on the earth, our hairs remain in a downward position because of the gravitational force of the earth. Once some are in space, the hairs stand as there is zero gravity in space.
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संबंधित प्रश्न
If the earth is round like a globe, how is it that we do not fall off?
Look at Sunita’s photographs and the dates written on each of them. Write what all is happening and when?
Think why water flows downwards on any slope. On mountains, water flows downwards, not upwards.
Do you think the moon is flat like the coin or round like a ball?
Look at the moon tonight and draw what it looks like. Look and draw again after one week, and then after 15 days.
| Today’s Date | Date after a week | Date after 15 days |
At night look at the sky carefully for 5 minutes.
- What could you see?
- 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.
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.
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?
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?
