Earth, The cause of plate motions
Plates are thought to move in response to the movement of convection currents. These currents cause a vertical transfer of heat through a mass movement of material. In the Earth, the material that is moving vertically is mantle material, which contains about 5 percent magma between crystalline solids. This amount of liquid allows the mantle material to move more
posted by PoorCake @ 9:32 AM
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