The Primary Difference Between Lithospheric and Asthenospheric Mantle That Gives

question 45

Multiple Choice

The primary difference between lithospheric and asthenospheric mantle that gives rise to numerous different patterns of physical behavior is ________.

• A)physical state: the lithosphere is solid;the asthenosphere is liquid
• B)chemical composition: the lithosphere is mafic;the asthenosphere is felsic
• C)temperature: the lithosphere is cooler than the asthenosphere
• D)chemical composition: the lithosphere is felsic;the asthenosphere is mafic

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Definitions:

Active Channel

The portion of a river or stream that is currently used for the flow of water, often subject to frequent changes in course and volume.

Thunderstorms

Violent weather phenomena characterized by the presence of lightning and thunder, often accompanied by heavy rainfall.

Snowmelt

The process of snow changing into water due to rising temperatures, an important source of fresh water in many regions and a factor in flood generation.

Persistent

Enduring or continuing for a long while, not easily dispelled or removed.