What created Earth's moon?
A) The expulsion of rocky mantle after a collision with a planetary body
B) The initial big bang expansion event
C) The formation of a new star
D) The collision between two older moons

Question

Quizplus · Accepted Answer

The moon orbiting Earth resulted from the initial collision with another planetary body about the size of Mars. The collision ejected some rocky mantle while the metallic core of that body fell into Earth's core. The rocky mantle began to condense to form the moon we know today. Information can be found in the section Earth, Ocean, and Atmosphere Accumulated in Layers Sorted by Density.

What Created Earth's Moon