Question

Which one of the following describes the Lithosphere?

A

Upper and lower mantle

B

Crust and upper mantle

C

Crust and core

D

Mantle and core

Medium

Solution

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Correct option is B)

Lithosphere is the rigid, rocky outer layer of the earth, consisting of the crust and the solid outermost layer of the upper mantle. It extends to a depth of about 100 km. It is broken into about a dozen separate, rigid blocks, or plates. The lithosphere is underlain by the asthenosphere which is the weaker, hotter, and deeper part of the upper mantle.

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