The co-accretion hypothesis for the formation of the moon suggests that the moon and Earth formed as a double planet from the same cloud within the solar nebula.This hypothesis predicts that
A) the moon and Earth should have nearly the same mass and radius.
B) the surfaces of the moon and Earth should be very similar and show evidence of plate tectonics.
C) the moon and Earth should have identical compositions and densities.
D) all of the above
E) a and c

Question

Quizplus · Accepted Answer

The co-accretion hypothesis suggests that the moon and Earth formed together from the same material, so they should have identical compositions and densities. However, the moon's mass and radius are much smaller than Earth's, and their surfaces are quite different, with the moon lacking plate tectonics.

The Co-Accretion Hypothesis for the Formation of the Moon Suggests