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Knipp-7D-Swands
Earthquake facts
15
Geology
7th Grade
01/07/2013

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Cards

Term
Shear
Definition
push rock in opposite direction but not directly direction
Term
Compression
Definition
squeezes rocks
Term
Tension
Definition
pulls rocks apart
Term
Strike-slip Fault
Definition
rocks on either side of the fault are moving past each other without a lot of upward or downward movement
Term
Normal Fault
Definition
along this, rocks above the surface move downward in relation of rocks below
Term
Reverse Fault
Definition
when rocks break from pushing from oppisite directions from above the surface is forced up and over rocks below the surface
Term
Fault
Definition
when rocks break they move along the surface
Term
Earthquake
Definition
vibration produced by breaking of rocks
Term
Magnitude
Definition
measure of energy in earthquake that is on a seismograph
Term
Liquifaction
Definition
wet soil that is shaken from an earthquake that turns into liqiud
Term
seismograph
Definition
a instrument used to register earthquake waves and record the time that each arrived
Term
focus
Definition
in an earthquake the point below the Earth's surface where energy is released from seismic waves
Term
epicenter
Definition
point of Earth's surface directly above an Earthquakes focus
Term
seismic wave
Definition
wave generated by an earthquake
Term
tsunami
Definition
seismic sea wave that begins over an earthquake focus
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