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प्रश्न
How much time does a ray of moonlight take to reach the Earth?
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उत्तर
One second approximately.
संबंधित प्रश्न
How can you prove that the earth is a sphere by looking at the horizon?
Study the picture and answer the questions that follow.
(a) What is meant by the Solar System?
(b) Give two differences between a planet and a star.
(c) Name the planets known as terrestrial planets.
(d) Give two advantages the earth has over other planets.
(e) What are satellites?
Distinguish between the following pair.
Planet and Planetoids
Name the planet having no satellite.
Which planet has the largest number of satellites?
Or
Name the largest known satellite of any planet.
Give reasons for the following:
Mercury completes its orbit in less time than the Earth.
The shape of the earth is not exactly that of a sphere Why?
Why is Neptune the coldest planet of the Solar System?
For what purpose are rockets used in space travel?
Match the following.
| 1 | Asia | Vatican city |
| 2 | Africa | Amazon rainforest |
| 3 | Europe | Sahara desert |
| 4 | South America | Kangaroo |
| 5 | Australia | Biggest continent |
