Earth Science: Geology, the Environment, and the Universe

Section 4: Cause of Plate Motions

Causes of Plate Motions

1
What is thought to be the driving mechanism of plate movement?
A)volcanoes
B)conduction of heat in the mantle
C)continental drifting
D)convection currents in the mantle
2
How are the convection currents set in motion?
A)slab push and ridge pull
B)slab push
C)the heat from radioactive decay
D)spreading mid-ocean ridges
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