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Knipp - Ch.5 (Earthquakes)
chapter 5 - earthquakes
23
Geology
7th Grade
12/08/2008

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Term
when an rock reaches its elastic limit
Definition
fault
Term
the vibrations produced when a rock breaks
Definition
earthquake
Term
type of fault occuring at a divergent boundary
Definition
normal
Term
type of fault occuring at a convergent boundary
Definition
reverse
Term
type of fault occuring at a transform boundary
Definition
strike-slip
Term
the San Andreas fault is this type of fault
Definition
strike-slip
Term
waves generated by an earthquake
Definition
seismic waves
Term
the point where an earthquake begins
Definition
focus
Term
the fastest type of seismic waves
Definition
primary
Term
seismic waves that move at right angles to the direction of the wave travel
Definition
secondary wave
Term
the slowest type of seismic wave
Definition
surface wave
Term
a tsunami is an example of this type of seismic wave
Definition
surface wave
Term
the point directly above where an earthquake begins
Definition
epicenter
Term
instrument used to measure seismic waves from earthquakes
Definition
seismograph
Term
paper record of a seismic event (earthquake)
Definition
seismogram
Term
outermost layer of the Earth
Definition
crust
Term
inner most layer of the Earth
Definition
core
Term
made up of the crust and the outer most part of the mantle
Definition
lithosphere
Term
the energy of an earthquake
Definition
magnitude
Term
scale measuring the strength of an earthquake
Definition
Richter scale
Term
when soil can act like liquid during an earthquake
Definition
liquifaction
Term
ocean waves caused by earthquakes
Definition
tsunamis
Term
scale that measures magnitude of an earthquake by how much damage it does
Definition
Mercalli scale
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