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27 Cards in this Set

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Elastic Rebound

The sudden return of elastically deformed rock to its undeformed shape.


The movement or trembling of the ground that is caused by a sudden release of energy when rocks along the fault move


The location within earth along the fall at which the first motion of an earthquake occurs


The point on earth surface directly above and earthquakes starting point for focus

Body Wave

In geology a seismic waves that travels through the body of a medium

Surface Wave

In geology a seismic wave that travels along the surface of a medium and that has a stronger effect near the surface of the medium than it has in the interior

P Wave

A primary wave or compression wave a seismic wave that causes particles of rock to move in back-and-forth direction parallel to the direction in which the wave is traveling he waves are the fastest seismic waves and can travel through solids liquids and gases

S Wave

Secondary wave or shear wave is seismic waves that causes particles of a rock to move and a side to side direction perpendicular to the direction in which the wave is traveling S waves are the second fastest seismic waves and can only travel through solids

Rayleigh Wave

A surface wave that causes rock to move side to side and perpendicular to the direction in which the waves are traveling movies in an elliptical rolling motion

Love Waves

A seismic wave that causes rocks to move side to side and perpendicular to the direction in which the waves are traveling

Shadow Zone

An area on earth surface where no direct seismic waves from a particular earthquake can be detected

Convergent Boundary

At a convergent plate boundary plates move toward each other and collide the plate that is dancers of ducks are sinks into the FSP or below the other place as the plates move the overriding Sweet streets across the top of the subducting plate and earthquakes occur convergent oceanic boundaries can occur between two oceanic plates are between one oceanic continental plate

Divergent Boundary

I divergent plate boundary is that make up the middle she really is plates are moving away from each other earthquakes occur along middle she ridges because Oceana sisters pulling away from both sides of each Ridge this spreading mulch and causes earthquakes along the ocean ridges


First fix also a current locations were two continental plates converge and diverge or move horizon the op. cit. directions as they continental plates interact the rock surrounding the boundary experiences stress the stress may cause mountains to form and also causes frequent earthquakes

Fault Zones

A region of numerous closely spaced faults


Instrument that records vibrations in the ground


A tracing of earthquake motion that is recorded by a seismograph

Mercalli Scale

Measures intensity

Moment Magnitude

Uses fault size and distance at fault blocks move to measure magnitude

Richter Scale

Measures magnitude using ground motion


A measure of strength of an earthquake


A giant ocean waves that forms after a volcanic corruption submarine earthquake or landslide

Seismic Gap

An area along the fall were relatively few earthquakes have occurred recently but we're strong earthquakes are known to have occurred in the past


A small earthquake that may proceed a large earthquake

What can cause tsunamis

Undersea earthquakes and drop in rising ocean floor

How do you find an epicenter

Determine the distance of an epicenter scientist and I see arrival times of P waves and S waves the longer the lag time between their arrival of P waves and the arrival of S waves is the farther away from earthquake that occurred

How do you locate the epicenter of an earthquake

To locate the epicenter of an earthquake scientist use computers perform complex trend triangulations based on information from several seismograph stations