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प्रश्न
How did the Earth form?
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उत्तर
- Approximately 4.54 billion years ago, Solar System was a cloud of dust and gas known as Solar Nebula.
- Due to an explosion, these particles collapsed and began to spin having the sun at centre.
- The bigger particles which revolve around the sun are called planets. Thus the planet Earth formed.
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संबंधित प्रश्न
Short Answer Question:
Name the two sources of heat in the interior of the earth.
Fill in the blank:
________is the narrow zone of contact between lithosphere, hydrosphere, and atmosphere.
In terms of size, the earth is ______ planet in the Solar System.
Study the picture and answer the questions that follow.
(a) What does the picture show you about the earth?
(b) State briefly the Bedford Level Experiment.
(c) The sun rises and sets at different times in different places. What does the statement show the shape of the earth?
(d) In what way is the earth’s atmosphere beneficial to mankind?
Distinguish between a planet and a star.
Which planet has only one satellite?
Mention two important features of Earth that make it a planet suitable for life.
Arrange the nine planets of the solar system in order of their sizes.
Why do planets, being opaque bodies, shine in the sky?
Why is the following planet not inhabitable?
Mercury
Why is the following planet not inhabitable?
Venus
Why is the following planet not inhabitable?
Neptune
Why is the following planet not inhabitable?
Saturn
Name the following:
The planet nearest to the Sun.
Give reasons for the following:
No life is possible on Saturn.
‘Venus is considered Earth’s Twin’. Why?
What is meant by Summer Solstice?
For what purpose are rockets used in space travel?
