Question

Identify statements true of the lithosphere and asthenosphere. Choose one or more: A. The asthenosphere is relatively soft compared to the rigid lithosphere. B. The lithosphere "floats" on the asthenosphere. C. The lithosphere is denser than the asthenosphere. D. The asthenosphere underlies the lithosphere.

Answer 1

Answer:

A. The asthenosphere is relatively soft compared to the rigid lithosphere.

B. The lithosphere "floats" on the asthenosphere.

D. The asthenosphere underlies the lithosphere.

Explanation:

when we mechanically classify the structure of the earth, our blue planet is divided into 5 main spheres which are:

• Lithosphere
• Asthenosphere
• Mesosphere
• Outer core
• Inner core

Each of these concentric layers have different mechanical properties.

The lithosphere is the outermost layer and it is made up of the crust coupled with upper part of the mantle. This mechanical layer of the earth is made up of rigid rocks in solid state. The whole of lithospheric mass sits and rides on the ductile and weak asthenosphere. The asthenosphere is relatively plastic in nature.