Question

Which of these conditions would likely cause the tectonic plates of Earth to stop moving?

a) Earth’s crust and mantle reach thermal equilibrium.
b) Earth stops receiving energy from the Sun
c) The temperature of the surface of Earth drops considerably.
d) The amount of radiogenic heat released by the mantle multiplies.

Answer 1

I believe it's A, because the intense heat from the Earth's core that causes the molten layer to move in a pattern called a convection cell which in turn moves the tectonic plates.