If the material that formed the Moon was debris from a collision between the early Earth and another body, what can we predict about the composition of moon rocks collected by Apollo astronauts?
A) Moon rocks should have the same composition as rocks found on and inside Earth.
B) Moon rocks should have a completely different composition than rocks found on Earth.
C) Moon rocks should have a composition that is the same as Earth's crust.
D) Moon rocks should have some similar and some different compositional characteristics.

Question

Quizplus · Accepted Answer

The Moon's composition is expected to be similar to Earth's crust because it formed from debris resulting from a collision with Earth, but it may also have differences due to the mixing with the impacting body's material and subsequent geological processes.

If the Material That Formed the Moon Was Debris from a Collision