All terms in this list:

deformation: the bending, tilting, and breaking of the earths crust; the change in the shape in response to stress.

Seismology: The study of earthquakes

elastic Rebound: the sudden return to elastically deformed rock to its deformed shape.

p waves: a seismic wave that causes particles if rock to move back and forth direction.

seismic waves: a wave of energy that travels through the earth away form ans earthquake in all directions.

S waves: a seismic wave that causes particles of rock in a back and forth direction.

seismology: The study of the vibration of the Earth's interior caused by natural and unnatural sources, such as earthquakes.

seismograph: An instrument that automatically detects and records the intensity, direction and duration of earthquakes and similar events.

seismogram: a tracing of earthquake motion that is created by a seismograph.

epicenter: the point on earths surface directly above an earthquakes starting point, or focus.

focus: the point along a fault at which the first motion of an earthquakes occurs.