UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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This is the plastic layer of the mantle on which pieces of the lithosphere move.
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Lithosphere
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Asthenosphere
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Mesosphere
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Crust
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Explanation:
Detailed explanation-1: -The relatively plastic layer of the upper mantle of the Earth on which the tectonic plates of the lithosphere move. The asthenosphere is approximately 200 km [124 miles] thick and, owing to its depth below the Earth’s surface, warm ( 1, 400 degC [2, 640 degF]) but not molten.
Detailed explanation-2: -Temperature increases with depth in the earth and eventually the rock material of the mantle becomes partially molten. This partially molten layer is called the asthenosphere. Because it is partly molten (perhaps up to 10%) it becomes pliable or “plastic".
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