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Transcript
Earthquake
when the ground shakes suddenly and
violently caused by movement in Earth’s
crust or volcanic action; can cause a lot of
destruction
Fault
a break in a body of rock; crack in earth’s
crust because of displacement
Focus
where earthquake started
Seismic Waves
elastic wave in earth caused because of
an earthquake
Epicenter
point on earth's surface above the focus
point
Elastic Rebound
release of strain energy caused by
movement of fault(earthquake)
Aftershock
small earthquake that comes after bigger
one
P Wave
elastic wave, primary wave, type of
seismic wave, produced by earthquakes,
can travel through gases, solids, liquids
S Wave
elastic wave, secondary wave, type of
seismic wave,move through body of an
object
Surface Wave
seismic waves that are moving along the
surface of earth
Seismograph
instrument used to measure and record
details(force and duration) of earthquake
Seismogram
data produced by seismograph
Moment Magnitude
scale used to measure the amount of
energy released by earthquakes
Liquefaction
change from solid or gas to a liquid
Tsunami
long high sea wave caused by an
earthquake
Seismic Gap
section of fault that has made
earthquakes in the past but hasn’t made
one in a while
Crust
outermost layer of rock on earth
Mantle
region of earth's insides which contains
hot dense rocks, between crust and the
core,
Lithosphere
rigid outerpart of earth made up of the
crust and upper mantle
Asthenosphere
upper layer of earth’s mantle, below
lithosphere
Outer core
section of the core that is a liquid layer
between 2,900 and 5,150 km deep below
mantle about inner core
Inner Core
hottest part of core, central part of earth,
contains nickel and iron in solid state
Moho
mohorovicic discontinuity, boundary
between earth's crust and underlying
mantle