• The study of earthquakes.

• A break in the Earth’s crust along which blocks of the crust slide relative to one another due to tectonic forces.

• The change in the shape of rock in response to stress

• the sudden return of elastically deformed rock to its original shape

• Waves of energy that travel through the Earth.

pressure waves; the fastest type of seismic waves they can travel through solids, liquids, and gases.Aka: primary waves

Shear waves. Second fastest seismic waves, can’t travel through materials that are completely liquidaka: secondary waves

Made by breezy. :]Made by breezy. :]

Seismograph:Seismograph: an instrument located at or near the surface of the Earth that records seismic waves.

Seismogram • a tracing of earthquake motion created by

seismograph

Epicenter• the point on the Earth’s surfaced directly

above an earthquake’s starting point

Focus• The point inside the earth where an

earthquake begins.

Ch. 5 Sec. 3

Gap Hypothesis

• states that sections of active faults that have had relatively few earthquakes are likely to be the sites of strong earthquakes in the future

seismic gap

• an area along a fault where relatively few earthquakes have occurred

• A place within the Earth’s where the speed of seismic waves increase sharply; marks the boundary between the Earth’s crust and mantle.

An area on the Earth’s surface where no direct seismic waves from a particular earthquake can be detected