Which of the following factors is responsible for keeping a planet's atmosphere close to its surface?
A)pressure
B)cloud cover
C)gravity
D)moisture

Question

Quizplus · Accepted Answer

Gravity is the force that holds a planet's atmosphere close to its surface. The strength of gravity keeps the gases in the atmosphere from drifting away into space. The larger the planet, the stronger the gravitational pull, which is why gas giants like Jupiter can hold onto thick atmospheres made of hydrogen and helium.

Which of the Following Factors Is Responsible for Keeping a Planet's