What can we conclude about the structure of Earth's interior knowing that the average densityof Earth is higher than the average density of the rock on the continents and seafloor?
A)that Earth's most dense material must be water
B)that Earth's most dense material must be the seafloor and the continents
C)that Earth's most dense material must be beneath the surface
D)that Earth's least dense material must be the seafloor and the continents
E)that Earth's least dense material must be beneath the surface

Question

Quizplus · Accepted Answer

If the average density of Earth is higher than the average density of the rock on the continents and seafloor, then there must be denser material (such as iron and nickel) located deeper within Earth's interior. Therefore, choice C is the best answer as it states that the most dense material must be beneath the surface. Choices A, B, D, and E do not logically follow from the given information. The fact that the average density of Earth is higher than the average density of the rock on the continents and seafloor suggests that there must be more dense material beneath the surface of the Earth. This is consistent with our current understanding of the structure of the Earth, which includes a dense inner core, a less dense outer core, a mantle layer, and a crust layer. Therefore, option C is the best choice.

What Can We Conclude About the Structure of Earth's Interior