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प्रश्न
Why do we see stars mostly at night?
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उत्तर
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.
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संबंधित प्रश्न
Can you think why Sunita’s hair was standing?
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?
Can you now say why Sunita’s hair kept standing?
- Can you see India?
- Can you recognize any other place?
- Where is the sea?
- Do you find anything similar between the globe and this picture of the earth? In what ways are they different?
- Do you think Sunita could make out Pakistan, Nepal, and Burma separately when she saw the earth from space?
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.
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?
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?
