The interior of Mars cooled more quickly than the interior of the Earth because it has
A) a smaller surface area-to-volume ratio
B) a lower density
C) a larger surface area-to-volume ratio
D) a thinner atmosphere

Question

Quizplus · Accepted Answer

The cooling of a planet's interior is directly related to its surface area-to-volume ratio, with a larger ratio leading to faster cooling. Mars has a smaller volume compared to Earth, but a larger surface area-to-volume ratio, which means that its interior cooled more rapidly than Earth's interior. The other options are not directly related to the cooling of a planet's interior.

The Interior of Mars Cooled More Quickly Than the Interior