usually an earthquake occurs because underneath the earths crust are tectonic plates and when they move occasionlly one will get caught but the outside is still moving and that causes an earthquake
u c the world is like a jicksaw (how ever u spell it) the plates are all connected 2gether nd wen they move out of place it starts a earthquake. well dats all i can remember.
Earthquakes occur when a shift in the earth's crust causes tremors to rock the surface of the earth around the shift.Since the Earth's crust is divided into different plates, and these plates move...