Question

Which of the following is not true about Asthenosphere?

(a) It is present in the upper mantle

(b) It is in solid state

(c) It is the source of volcanic activity

(d) It is in plastic rather than solid state

I got this question in final exam.

This interesting question is from The Mantle, The Core in chapter Internal Structure of the Earth of Engineering Geology

Answer 1

The correct choice is (b) It is in solid state

The explanation is: It is in solid state is not true and the remaining options are true and they are characteristics of the asthenosphere. In Greek, “asthenes” means without strength and hence the name.