an earthquake is caused by a sudden slip on a fault much like what happens when you snap your fingers.stresses on the earth outlets layers push the sides the fault together
An earthquake is caused by a sudden slip on a fault, much like what happens when you snap your fingers. ... Stresses in the earth's outer layer push the sides of the fault together. The friction across the surface of the fault holds the rocks together so they do not slip immediately when pushed sideways.
