UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The lithosphere is mostly liquid, with some medium-density materials, such as silicon.
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The lithosphere is more plastic and flows slowly compared to the solid crust of Earth.
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The lithosphere includes the core and the lower portion of the mantle.
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The lithosphere includes the crust and the uppermost portion of the mantle, which is sold and rigid.
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Detailed explanation-1: -The correct answer is Crust and Upper mantle. It is the outer solid part of the earth, including the crust and uppermost mantle. It is about 100 km thick, although its thickness is age-dependent. The lithosphere, that is the rigid outer part of the earth with thickness varying between 10-200 km.
Detailed explanation-2: -Lithosphere and asthenosphere are divisions based on mechanical properties. The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid. The asthenosphere is partially molten upper mantle material that behaves plastically and can flow.
Detailed explanation-3: -Mantle: a semi-solid magma layer consisting of iron, magnesium, and silicon. Core: centrally located solid mass of metal (inner core) and a liquid mass of iron and nickel (outer core).