UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which part of Earth’s interior is inferred to have convection currents that cause tectonic plates to move?
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rigid mantle
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asthenosphere
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outer core
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inner core
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Explanation:
Detailed explanation-1: -The plates move on a hot flowing mantle layer called the asthenosphere, which is several hundred kilometers thick. Heat within the asthenosphere creates convection currents (similar to the currents that can be seen in the lava lamp).
Detailed explanation-2: -There are many layers to Earth, it is not one solid piece that moves around when we discuss tectonic plates. Tectonic plates are made up of the lithosphere, crust, and uppermost part of the mantle. Tectonic plates float on top of the asthenosphere which is a weak region under the lithosphere.
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