The fact that Earth's interior is sorted into layers indicates that
A) the process of formation from a nebula (by the slamming together of material and planetesimals that stuck together on impact) produces nice, neat layers.
B) Earth was once in a molten state, during which materials became sorted based on density.
C) the rotation of the early Earth acted like a centrifuge which separated materials based on weight.
D) nothing can be inferred about such a perplexing level of organization.

Question

Quizplus · Accepted Answer

The fact that Earth's interior is sorted into layers indicates that Earth was once in a molten state, during which materials became sorted based on density. As the molten Earth cooled down, denser materials sank towards the center, while less dense materials rose towards the surface, resulting in the formation of distinct layers within the planet.

The Fact That Earth's Interior Is Sorted into Layers Indicates