"the heat energy that powers tectonic activity" on the surface of earth originates deep in earth's core. how does this energy move from the core to the surface?

Energy produced in the center of the sun flows out through the sun's layers in different forms, including visible light. The sun's interior generally becomes cooler and less dense as you move away from the center. Rising currents of hot gas in the convection zone carry energy toward the sun's surface.

Argon, carbon-14, and carbon-12