Where do most geologists believe that the energy for plate tectonics comes from?

The majority of geologists agree that the primary energy source for plate tectonics is the heat generated from the Earth's core. This internal heat is a result of several factors, including the residual heat from the Earth's formation, radioactive decay of isotopes within the Earth, and the heat produced by the solidification of the inner core.

As this heat rises towards the surface, it causes convection currents in the mantle. These convection currents play a crucial role in the movement of tectonic plates. The plates are essentially floating on the semi-fluid asthenosphere beneath them, and the movement of these currents facilitates the lateral movement of the plates.

This process is fundamental to the theory of plate tectonics, influencing various geological phenomena, including earthquakes, volcanic activity, and the formation of mountain ranges. Understanding the core's role underscores the importance of internal geological processes over external factors, such as solar radiation or wind, which do not significantly influence plate tectonic movements.