Because of the high temperatures and extreme pressure, the rocks in the asthenosphere are?

Question

A. soft and flowing.
B. dense and solid.
C. brittle and thick.
D. molten and liquidy.

Answer 1

The answer is A. The asthenosphere is at such pressures and temperatures that the rocks within it are not completely molten, but are in a plastic state......much like extremely thick toffee. There are areas of partial melting within the asthenosphere and these contribute to some surface volcanic processes, but in general the asthenosphere is a transitional stage of the very upper part of the Mantle. It commonly begins at a depth of about 400 kms, and transitions into the Upper Mantle at the "E" layer (around 750-800 kms down), where changes in chemistry and crystalline structure of minerals in the layer change the velocity of "S" and "P" waves travelling through the rocks.

Answer 2

D.moletn and liquidy