How and why do the earths tectonic plates move?
Earth’s tectonic plates move due to heat dissipation, which forms convection currents, from the mantle beneath the plates. The mantle is a layer within the Earth between the crusts and the core. The temperatures between the two layers range from 500°C to more than 4000°C. Therefore, the hotter magma will rise to the top near the crusts while the cooler magma will sink to the bottom near the core, forming convection currents. These currents will then move the plates which are situated on the crust just above it.