The fission theory of the moon's origin has been criticized because
A) the moon is more spherical than Earth.
B) the moon's composition is different from Earth's.
C) the tidal forces are making the moon approach Earth.
D) it requires too many coincidences for it to occur.
E) the moon has a large iron-nickel core.

Question

Quizplus · Accepted Answer

The fission theory suggests the moon was once part of Earth, but the moon's composition, particularly its lack of iron compared to Earth, contradicts this theory.

The Fission Theory of the Moon's Origin Has Been Criticized