Plate Movement Theory

Notes

Plate Movement Theory: 1. Heat from the Earth’s core causes mantle to become less dense. 2. Mantle material rises towards the Earth’s surface. 3. Rising convection currents spread beneath plates and drag them apart, giving rise to divergent plate movement. 4. Mantle material loses heat and sinks towards the Earth’s core. 5. Sinking convection currents cause convergent plate movement, where the convection currents collide. 6. Mantle material is then reheated and the process repeats.