Plate (crust)
Plates or plates indicate rocks of several tens of kilometers in thickness covering the surface of the earth. There are continental and oceanic plates in the plate, and the oceanic plates are stronger than the continental plates and are dense, so that when two collide, the oceanic plate sinks below the continental plate. In addition, cracks may occur in the plate due to the rise of magma underground, and when the magma continues to rise continuously, the plate is then divided and divided into two sides.