Which of these clauses correctly describes the mantle of Earth?
A) hot, semimolten rock that flows upward in hotter parts of the mantle and downward in cooler parts
B) hot, semimolten rock that flows downward in hotter parts of the mantle and upward in cooler parts
C) hot, semimolten rock that flows upward at the equator and downward at the poles because of Earth's rotation
D) hot, semimolten rock that flows downward at the equator and upward at the poles because of Earth's rotation

Question

Quizplus · Accepted Answer

The mantle of Earth is composed of hot, semimolten rock that moves in a process called convection; it flows upward in hotter regions where the rock is less dense and sinks in cooler regions where it is denser.

Which of These Clauses Correctly Describes the Mantle of Earth