Author Question: How does counting craters help us estimate the age of a moon's surface? What will be an ideal ... (Read 60 times)

corkyiscool3328 · **on:** Jul 27, 2018

How does counting craters help us estimate the age of a moon's surface?

What will be an ideal response?

Question 2

A star on the red giant branch has a core about the size of ________.

Fill in the blank(s) with correct word

kiamars2010 · **Reply #1 on:** Jul 27, 2018

Answer to Question 1

Surface bombardment was much heavier early in the solar system's history. A surface with few craters implies many, or all, of the early craters were covered up by lava flows or other activity. The fewer the craters and the smoother the surface, the younger we assume it to be. The smoothest surfaces are the youngest.

Answer to Question 2

the Earth