Why the moon has no atmosphere ?

Options

A. acceleration due to gravity on the surface of the moon is greater than that on the surface of the earth.
B. it is far away from the earth.
C. it is not a planet.
D. the escape velocity on its surface is very small.

Answer

D

Explanation

The moon has no atmosphere because the escape velocity of a body on it is small. The escape velocity of gas particles on the moon is almost equal to their usual velocity. So, the gas particles fly away from the moon.s surface. Hence, the moon has no atmosphere.