Question

The atmosphere is held to the earth by

• A. Gravity
• B. Wind
• C. Clouds
• D. Earth’s magnetic field

Answer 1

The correct option is A

Gravity

The Correct Answer of the above question

Option A is correct Gravity.

The atmosphere is held to the earth by Gravity.

The explanation for the correct Answer:-

Gravity:

1. As gravity hugs a large blanket of air to the Earth's surface, what physicists call a density gradient is set up in the air.
2. The air near the ground is pulled on by gravity and compressed by the air higher in the sky.
3. This causes the air near the ground to be denser and at greater pressure than air at higher elevations.
4. Earth's gravity is very strong to hold onto its atmosphere and keep it from drifting into space.
5. Various atom of gases present in the earth's atmosphere has masses and a gravitational force acts between these atoms and the earth.
6. Also, this is the force that holds the various gases near the surface and the atmosphere is present.
7. Due to gravity, the earth pulls all objects towards it. The air that surrounds our planet is held in place by gravity, and this envelope of air is referred to as the atmosphere

Thus, The atmosphere is held to the earth by Gravity.

The explanation for incorrect answers:

In the case of option B.

1. As the Wind is produced due to pressure differences, there is no role of wind to hold the atmosphere.
2. Thus, option B is incorrect

In the case of option C.

1. Clouds are formed due to the vaporization of water in seas, They are responsible for rain.
2. Thus, option B is incorrect.

In the case of option D.

1. Earth’s magnetic field doesn't have any influence on the atmosphere, It solely depends upon gravity.
2. Thus, option B is incorrect.

Thus, the correct option is option A.