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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
What is the earth’s mean temperature?
Short Answer Question:
Name the two sources of heat in the interior of the earth.
Short Answer Question:
What is meant by Terrestrial Life?
Fill in the blank:
___________is the major reservoir of carbon on the earth.
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.
Which planet is known as the ‘red planet’?
Which is the center of the Solar System-Sun or Earth?
Mention two important features of Earth that make it a planet suitable for life.
Distinguish between the following pair.
Planet and Planetoids
Distinguish between the following pair.
Meteors and Meteorites
Why is the following planet not inhabitable?
Venus
Why is the following planet not inhabitable?
Neptune
Name the following:
The planet nearest to the Sun.
What makes the Sun so hot?
Why is Mercury the hottest planet of the Solar System?
Who am I?
I am the nearest star to the earth.
The line which divides day and night on the Earth’s surface is ______.
Match the following.
| 1 | Asia | Vatican city |
| 2 | Africa | Amazon rainforest |
| 3 | Europe | Sahara desert |
| 4 | South America | Kangaroo |
| 5 | Australia | Biggest continent |
