Select the statement that best describes how the process of plate tectonics circulates materials between the asthenosphere and the lithosphere.
A) Some asthenosphere becomes lithosphere at mid-ocean spreading centers and reenters the asthenosphere at subduction zones.
B) Some lithosphere becomes asthenosphere at mid-ocean spreading centers and reenters the lithosphere at subduction zones.
C) The materials that form the asthenosphere never mix with the materials that form the lithosphere.

Question

Quizplus · Accepted Answer

At mid-ocean ridges, material from the asthenosphere rises and forms new lithosphere as it cools. This newly formed lithosphere can then be recycled back into the asthenosphere at subduction zones, where one tectonic plate moves under another.

Select the Statement That Best Describes How the Process of Plate