What drives the motion of the tectonic plates on Earth?

Question

Quizplus · Accepted Answer

The motion of tectonic plates on Earth is driven by convection cells in the mantle. Heat generated by radioactive decay in the core causes temperatures to be higher at the center of the Earth than at its surface. This heat drives the motion of the mantle, creating currents of molten rock that move the tectonic plates above it.

B, C, D, and E are not correct choices. Lava flows in trenches along the sea floor, the Coriolis force, Earth's magnetic field, and tidal forces can affect various aspects of the Earth's systems, but they do not directly drive the motion of tectonic plates.

What Drives the Motion of the Tectonic Plates on Earth