What does a darkened surface indicate on a rocky moon, as compared to a different moon with a lighter surface?
A) It indicates the presence of cooling lava from volcanic eruptions.
B) It indicates that the surface of the darkened moon is older than that of the lighter moon.
C) It indicates that the surface of the darkened moon is younger than that of the lighter moon.
D) It indicates an elevated level of organic compounds on the surface.
E) It indicates a colder region on the surface of the planet.

Question

Quizplus · Accepted Answer

A darker surface on a rocky moon indicates that the surface is older than that of a lighter moon. This is because over time, the surface of a moon is bombarded by micrometeorites and other space debris, which darkens the surface.

What Does a Darkened Surface Indicate on a Rocky Moon