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chapter 8 & 10 vocab
Term | Definition |
---|---|
earthquake | a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action. |
focus | point in earths interior where the earthquake occurred |
seismic waves | waves of energy released by an earthquake. |
epicenter | point on earths surface directly above the focus. |
elastic rebound | sudden return of deformed rock back to undeformed shape. |
body waves | seismic waves that move through the inside (body) of earth. |
p waves | push-pull body waves. |
s waves | side-to-side body waves. |
surface waves | seismic waves that move on earths surface. |
seismograph | all seismic waves are recorded on a seismograph. |
seismogram | all seismic waves are recorded on a seismogram. |
Richter Scale | numerical scale (1-?) based on height of largest seismic wave (magnitude) |
Moment magnitude scale | only useful for small,shallow quakes. |
modified mercalli scale | Roman numeral scale (l-xll) that measures the intensity (ground shaking) created by an earthquake. |
liquefaction | |
tsunami | |
seismic gap | |
crust | |
mantle | |
outer core | |
inner core | |
Moho | |
ring of fire | |
hot spot | |
viscosity | |
vent | |
pyroclastic material | |
volcano | |
crater | |
shield volcano | |
cinder cone | |
composite volcano | |
caldera | |
lahar | |
pluton | |
sill | |
laccolith | |
dike | |
batholith |