Question

What helps the atmosphere hooked up to earth?
A.Gravity
B.Magnetic rays
C.Electromagnetic radiations
D.All of the above

Answer 1

Hint: Earth’s atmosphere extends up to \[10,000km\] from the surface of the earth. It is because of this atmosphere that makes the earth the only planet in the solar system that can sustain life. It contains a blanket of gases that not only contains the air we breathe but also acts as a shield that protects us from the sun’s harmful radiation. Let us see what makes the atmosphere hooked up to earth.

Complete step-by-step answer:
The mass of the earth’s atmosphere is only \[1/1,200,000\] the total mass of the earth. Therefore we can see it is thin skin surrounding our planet. The force that is holding up this atmosphere is gravity. Gravity is the force that helps the atmosphere to hook up to earth and also it is the same force that anchors us to the earth. Earth’s gravity is strong enough to hold this atmosphere. If Earth is a much smaller planet, its gravity would be weak to hold a large atmosphere. Planets like mercury or mars are smaller planets compared to earth and therefore they have a less gravitational pull. That is one reason why Mars has a weak gravity force.

Therefore the correct option is A. Gravity helps the atmosphere is hooked up to earth.

Note:
Molecules that are present in the atmosphere are in constant motion spurred on by energizing sunlight. To escape this atmosphere of the earth the molecules need to travel above the range of escape velocity. Some molecules move quickly to escape the grip of Earth’s gravity. Since the mass of the earth is quite higher, therefore, this gravity’s grip is also stronger. If it is less mass like the mars’ mass the gravity’s grip would be weaker and most of the atmosphere would be lost. And this is why Mars lost most of its original atmosphere.