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Earth Quakes

Chapter 12 pg 295

QuestionAnswer
Earthquakes a movement or trembling of the ground that is caused by a sudden release of energy when rocks along a fault move.
Elastic Rebound the sudden return of elastically deformed rock to its undeformed shape
Shadow Zone An area on Earth's surface where no direct seismic waves from a particular earthquake can be detected
Focus the location within Earth along a fault at which the first motion of an earthquake occurs
epicenter the point on earth's surface directly above an earthquake's starting point, or focus.
body wave in geology, a seismic wave 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 that it has in the interior
P wave the primary wave the moves up and down and it also the fastest
S wave a secondary wave that moves side to side and is the 2nd fastest
Fault Zone A region of numerous closely spaced faults
Seismograph an instrument that records vibrations in the ground
seismogram a tracing of earthquake motion recorded by a seismogram
Magnitude a measure of strength of an earthquake
Intensity the amount of damage and Earthquake has done
tsunami a giant ocean wave formed from a volcanic eruption, submarine earthquake, or landslide
seismic gap An area that hasn't had an earthquake and is bound to have one
Created by: summerkizo
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