What does plate tectonics cause?
Plate tectonics cause earthquakes, and volcanoes. When the plates move they built up stress and when the faults release the fault cause and earth quake. There are different types of earthquakes that happen when plate collide. There are strike-slip faults, when two plates slid past each other, spreading faults, two plates move apart, collision, two plates crash into each other, and subduction, one plate sinks under the other. Volcanoes are usually made when one plate subducts under the other and the crust sinks under into the mantle. The magma melts the rock and it forces its way to the surface, where it eventually solidifies.