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Chapter 8&10
Term | Definition |
---|---|
earthquake | The vibration of the earths produced by the rapid release of energy |
focus | the point within earths where an earthquake originate |
seismic waves | vibrations that travel through earth carrying the energy released during an earthquake. |
epicenter | the location on earths surface directly above the focus or origin ,of an earthquake |
elastic rebound | tendency for for deformed rock along an fault a spring back |
body waves | seismic waves that move through the inside body of earths |
P waves | push-pull body waves |
S waves | side -to -side body waves |
surfaces waves | seismic waves that move on earths surfaces |
seismograph | in instrument that records seismic waves |
seismogram | the record made by the seismograph |
Richter Scale | numerical scales (1-2)based on height of largest seismic waves (matitude) |
Moment Magnitude Scale | a more precise measure of earthquake magnitude than the Richter scale ,which is derived from the amount of displacement that occurs along a fault zone and estimate the energy released by an earthquake |
Modified Mercalli Scale | roman numerical scale that measure the intensity created by an earthquake |
liquefaction | an phenomenon ,sometimes associated with earthquakes ,in which soils and other unconsolidated materials saturated with water are turned into a liquid that is not able to support building |
tsunami | |
seismic | |
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 |