The Rate of Cratering in the Lunar Highlands Shows Us

question 72

Multiple Choice

The rate of cratering in the lunar highlands shows us that:

• A)they must be younger than the older, darker mare.
• B)they range from 4.6-4.4 billion years old, on average.
• C)the largest impacts are the youngest, such as Copernicus and Tycho.
• D)the oldest rocks are at least as old as the mare, but some craters are much younger.
• E)most of the asteroids must have hit the Moon, not the Earth.