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)Partial melting within it generates magma.
E)It is surrounded by the upper mantle.

Question

Quizplus · Accepted Answer

The statement "It is a rigid rock layer" is not true. The asthenosphere is actually a layer of the mantle that behaves plastically, meaning the rocks can flow and deform easily over long periods of time due to the intense pressure and heat. It is not a rigid layer like the lithosphere.

Which of the Following Statements About the Asthenosphere Is Not