SOLAR SYSTEM

UNIVERSE

PLANETARY INTERIORS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
the lower mantle is ____
A
the lithosphere
B
the asthenosphere
C
a liquid
D
a solid
E
something that extends to the core
Explanation: 

Detailed explanation-1: -The lower mantle extends from about 660 kilometers (410 miles) to about 2, 700 kilometers (1, 678 miles) beneath Earth’s surface. The lower mantle is hotter and denser than the upper mantle and transition zone. The lower mantle is much less ductile than the upper mantle and transition zone.

Detailed explanation-2: -The upper and lower mantle. The upper mantle begins at a depth of from 5 to 50 kilometers (3−30 miles) and extends to a depth of approximately 670 kilometers (400 miles) from the surface; the lower mantle extends from a depth of about 670 kilometers (400 miles) to about 2, 900 kilometers (1, 740 miles).

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