What is the name given to Earth's cool, rigid outer layer based on physical properties?

a. Asthenosphere
b. Core
c. Lithosphere
d. Troposphere


ANS: C
The lithosphere includes continental and oceanic crust and the uppermost portion of the cool and rigid
mantle. The layer is 100 to 200 kilometers thick. Information can be found in the section Earth's Inner
Structure Was Gradually Revealed.

Environmental & Atmospheric Sciences

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