Which layer of the Earth moves in different directions due to convection AND gravity?
Question
Which layer of the Earth moves in different directions due to convection AND gravity?
Solution
The layer of the Earth that moves in different directions due to convection and gravity is the Asthenosphere. This layer is part of the upper mantle and is composed of semi-fluid rock. The heat from the core of the Earth causes convection currents in the asthenosphere. These currents, along with gravity, cause the tectonic plates (which sit on top of the asthenosphere) to move in different directions.
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