Chapter 8 Earthquakes

________the study of earthquakes

_______the bending, tilting, and breaking of the Earth's crust; the change in the shape of rock in response to stress

_______the sudden return of elastically deformed rock to its undeformed shape

_________a seismic wave that causes particles of rock to move in a side-to-side direction

_________a seismic wave that causes particles of rock to move in a back-and-forth direction

__________a wave of energy that travels through the Earth, away from an earthquake in all directions.

__________the point along a fault at which the first motion of an earthquake occurs

___________the point of Earth's surface directly above an earthquake's starting point, or focus

__________a tracing of earthquake motion that is created by a seismograph

__________an instrument that records vibrations in the ground and determines the location and strength of an earthquake

____________a hypothesis that is based on the idea that a major earthquake is more likely to occur along the part of an active fault where no earthquakes have occurred for a certain period of time

_____________an area along a fault where relatively few earthquakes have occurred recently but where strong earthquakes have occurred in the past