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bwilson13
Earthquakes
21
Science
7th Grade
03/06/2014

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Term
Faults
Definition
place where rocks break
Term
Earthquake
Definition
Is the vibration produced by breaking rock
Term
Normal fault
Definition
formed at a divergent boundary.
- plates pull apart
Term
Reverse fault
Definition
found at convergent boundary
- plates pus together
Term
Strike-slip fault
Definition
found at transform boundary
- plates slide past each other
Term
Seismic wave
Definition
pressure wave generated by an earthquake
Term
focus
Definition
point underground where earthquakes begin
Term
Primary wave
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 earthquake magnitude
Term
Liquefaction
Definition
When ground acts like a liquidduring an earthquake
Term
Taunamis
Definition
large wave caused by ean earthquake
Term
Where did the larges recent earthquake (over 4.5 on Richter scale) occur?
Definition
California
Term
How many earthquakes occur each year?
Definition
500,000
Term
How many earthquakes can we actually feel?
Definition
100,000
Term
What percent does that represent?
Definition
20%
Term
Where was the largest earthquake ever recorded?
Definition
Chile
Term
Where in the world was the most deadliest earthquake?
Definition
China
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