The cratering of the lunar highlands shows us:
A)they are younger than the maria.
B)they are older than the smoother maria.
C)they have been unchanged for the last 4.6 billion years.
D)they are like the Earth's continents, removed from the tectonic cycle of the mare.
E)they were made of more rigid lavas than the basalts that made the maria.

Question

Quizplus · Accepted Answer

The lunar highlands have more craters than the smoother maria, indicating that they are older than the maria which have been resurfaced more recently by lava flows. The lunar highlands show more craters than the smoother maria, indicating they are older. This is due to the fact that the highlands are made up of rock that is more resistant to volcanic activity and has not been resurfaced as frequently as the maria.

The Cratering of the Lunar Highlands Shows Us