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ameck
earthquake
23
Science
7th Grade
03/06/2014

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Cards

Term
fault
Definition
place where rocks break
Term
earthquake
Definition
vibrations caused by breaking rocks
Term
Normal fault
Definition
found at a divergent boundary
Term
reverse fault
Definition
found at a convergent boundary
Term
strike-slip fault
Definition
found at a transform boundary
Term
seismic wave
Definition
pressure wave generated by an earthquake
Term
focus
Definition
point underground where earthquake begins
Term
epicenter
Definition
point on the earth's surface right above the focus
Term
primary waves
Definition
fastest, underground
Term
secondary waves
Definition
next fastest, underground
Term
surface waves
Definition
slowest, travel on the surface most destructive
Term
seismograph
Definition
instrument used to measure earthquakes
Term
magnitude
Definition
strength of earthquake
Term
richter scale
Definition
measurement of earthquake magnitude
Term
liquefaction
Definition
when ground acts like a liquid during an earthquake
Term
tsunami
Definition
large wave caused by an earthquake
Term
where did the largest recent earthquake occur?
Definition
California (6.8)
Term
How many earthquakes occur each year?
Definition
500,000
Term
how many of them can actually be felt?
Definition
100,000
Term
what percent does that represent?
Definition
20%
Term
where was the largest earthquake ever recorded?
Definition
Chile
Term
Where was the world's most deadly earthquake?
Definition
China
Term
How often do 10.0 magnitude earthquakes occur each year?
Definition
Never been one recorded
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