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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
How can you prove that the earth is a sphere by looking at the horizon?
In terms of size, the earth is ______ planet in the Solar System.
Fill in the blank:
Eratosthenes worked out the circumference of the earth to be _______ km.
Fill in the blank:
A typical galaxy may contain ___________ stars.
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?
Provide reliable evidence to prove that the earth is spherical in shape.
‘Although the Moon has no light of its own, yet it shines’. Why?
Give a reason for the following:
Earth has the most ideal temperature conditions.
Why do planets, being opaque bodies, shine in the sky?
Distinguish between the following pair.
Meteors and Meteorites
Name the following:
The planet farthest from the Sun.
Give reasons for the following:
Venus is considered as the Earth’s twin.
Which is the satellite of the Earth?
What is “Geoid”?
Use your brain power!
Suppose you want to give your address to a friend you have on the planet Mars. How will you write your address if you want them to understand exactly where you live?
What information do man-made satellites provide?
The line which divides day and night on the Earth’s surface is ______.
The biggest continent is ______________.
