What is the fundamental mechanism responsible for driving the movement of tectonic plates?

Answer

Mantle convection

Mantle convection, driven by heat escaping from the Earth’s core, creates slow currents within the mantle rock. These currents drag the overlying tectonic plates along, serving as the primary engine for plate movement.

What is the fundamental mechanism responsible for driving the movement of tectonic plates?
GeologyEarthsurfaceTectonicplate