Shared Flashcard Set

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Earth Science
Earthquakes
16
Science
12th Grade
10/11/2015

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Cards

Term
Earthquake
Definition
Vibration of the lithosphere
Term
Elastic rebound
Definition
Distorted plates 'spring' back to their original shape
Term
Focus
Definition
Place 'inside' the earth where quake actually occurs
Term
Diverging boundaries
Definition
Shallow focus (close to earth's surface)
Term
Converging or subduction
Definition
Shallow-deep (far away from earth's surface)
Term
Transform fault
Definition
Shallow-medium (medium close to earth's surface)
Term
Epicenter
Definition
Point on the surface directly above the focus
Term
Fault (plane)
Definition
Crack that separates 2 plates
Term
P waves
Definition
Fast moving, longitudinal, travel through solid & liquid - body wave
Term
S waves
Definition
Slow, transverse, travel through solids only - body wave
Term
L waves
Definition
Slower than S, surface wave, so can be seen
Term
Lag Time
Definition
Calculate distance to quake
Term
Tsunami
Definition
Wave caused by movement of the sea floor
Term
Shadow zone
Definition
Place where neither P waves nor S waves are received
Term
2 main reasons why buildings collapse during earthquakes
Definition
Ground shaking & foundation failure
Term
3 things about earthquakes that seismologists hope to succeed in predicting
Definition
Time, Place & Magnitude
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