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Earthquakes
troy
27
Science
7th Grade
03/04/2014

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Cards

Term
faults
Definition
the surface rocks move on when they break
Term
earthquake
Definition
vibrations produced by the breaking of rocks
Term
normal fault
Definition
rock above the fault surface moves downward in relation to the rock below the fault surface
Term
reverse fault
Definition
forces are forced up and over the rock below the fault surface
Term
strike-slip fault
Definition
rocks on either side of the fault are moving past each other with out much upward or downward movement.
Term
seismic wave
Definition
pressure wave generated by an earthquake
Term
focus
Definition
point underground where earthquake begins
Term
epicenter
Definition
point on earths surface right above the focus
Term
primary waves
Definition
fastest, underground
Term
secondary wave
Definition
next fastest, underground
Term
surface waves
Definition
slowest, travel on surface, most destructive
Term
seismograph
Definition
instrument used to measure earthquakes (size and location)
Term
magnitude
Definition
strength of earthquake
Term
Richter scale
Definition
measurement of earthquakes magnitude
Term
liquefaction
Definition
when ground act likes "liquid" during an earthquake
Term
tsunamis
Definition
large wave caused by earthquake
Term
What is the slowest type of seizmic waves
Definition
surface waves
Term
What is the stregth of an earthqauke
Definition
magnitude
Term
True of False, A normal fault is found at a divergent boundary
Definition
true
Term
What is a fault
Definition
place where a rock breaks
Term
largest recent earthquake over 4.5
Definition
California
Term
number of earthquakes each year
Definition
500,000
Term
how many can be felt
Definition
100,000
Term
what percentage does that represent
Definition
20%
Term
were was the largest earthquake ever recorded
Definition
Chile
Term
were was the worlds most deadliest earthquakes
Definition
china
Term
10.0 earthquakes
Definition
rare unknown
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