Which of the following statements about the asthenosphere is not true?
A) It lies beneath the lithosphere.
B) It is a rigid rock layer.
C) It behaves plastically.
D) It acts like a lubricating layer allowing plates to move.
E) It has the same composition as the lower mantle.

Question

Quizplus · Accepted Answer

The asthenosphere is not a rigid rock layer, but instead behaves plastically due to high temperature and pressure. This allows it to act as a lubricating layer for the movement of tectonic plates. The asthenosphere lies beneath the lithosphere and has a different composition than the lower mantle.

Which of the Following Statements About the Asthenosphere Is Not