Studies of the amount of cratering at different locations on the Moon indicate that:
A) the rate of cratering in the Solar System has changed dramatically over time
B) the younger lunar surfaces are hundreds of billions of years younger than the oldest surfaces
C) the Moon has never been geologically active at any point in its history
D) most of the heavy cratering in the Solar System occurred before Earth formed
E) that cratering is no longer occurring in the Solar System

Question

Quizplus · Accepted Answer

The amount of cratering at different locations on the Moon indicates that the rate of cratering in the Solar System has changed dramatically over time. This is because younger lunar surfaces have fewer craters than older surfaces, indicating that there was a period of intense bombardment early in the Solar System's history, which has since declined.

Studies of the Amount of Cratering at Different Locations on the Moon