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Leo Piazza
Earthquakes
27
Science
7th Grade
03/04/2014

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Cards

Term
Faults
Definition
place where rocks break
Term
Earthquake
Definition
vibrations produced by the breaking of a rock
Term
Normal fault
Definition
found on a divergent boundary
-plates pull apart
Term
Reverse fault
Definition
found at a convergent boundary
-plates push together
Term
Strike-slip fault
Definition
found at a transformation boundary
-plates slid past eachother
Term
Seismic wave
Definition
Pressure wave generated by an earthquake
Term
Focus
Definition
Point underground where an earthquake begins
Term
Epicenter
Definition
Point on the Earth's surface right above the focus
Term
Primary wave
Definition
Fastest, underground
Term
Secondary wave
Definition
Next fastest, underground
Term
Surface wave
Definition
Slowest, travel on the surface, most destructive
Term
Seismograph
Definition
Instrument used to measure earthquakes (size and location)
Term
Magnitude
Definition
Strength of a earthquake
Term
Richer 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
True or False? A Normal Fault and a divergent boundary are related.
Definition
True
Term
True or False? Secondary waves are faster then Primary waves.
Definition
False
Term
True or False? Surface waves are stronger then Primary and Secondary waves.
Definition
True
Term
True or False? When the ground acts like "liquid" then it is called a Tsunami.
Definition
False
Term
Where did the largest recent earthquake (over 4.5 on Richter scale) occur?
Definition
California
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 and when was the worlds most deadly earthquake?
Definition
1556 in Central China
Term
How many earthquakes that are a 10.0 recorded in a year?
Definition
Never recorded (unknown)
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