Which of the following energy sources is thought to directly drive the lateral motions of Earth's lithospheric plates?
A) rotational spinning of the Earth, with the plates dragging behind
B) tidal gravitational attractive forces of the Sun and Moon
C) export of heat from deep in the mantle to the top of the asthenosphere and descending cold material in a solid state convective flow
D) electric and magnetic fields generated in and radiating from the inner core

Question

Quizplus · Accepted Answer

The lateral motions of Earth's lithospheric plates are primarily driven by the movement of heat from deep within the Earth's mantle to the top of the asthenosphere, and the sinking of cooler, denser material in a process known as solid-state convection. This convective flow in the mantle is a key mechanism behind plate tectonics.

Which of the Following Energy Sources Is Thought to Directly