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14 Cards in this Set
- Front
- Back
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Earthquake |
when the ground shakes as a result of seismic waves generated by moving tectonic plates on the mantle |
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Normal fault |
hanging wall goes down; foot wall goes up |
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Reverse fault |
hanging wall goes up, foot wall goes down |
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Strike-slip fault |
slides in different directions |
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Focus |
EXACTLY where the earthquake starts |
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Epicenter |
the place aboveground EXACTLY above the focus |
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P wave |
compressional wave; think of slinky, fastest |
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S wave |
right angles to the directions it is going, slower, cannot travel through liquid |
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Surface Waves |
most destructive, goes at the surface (duh!), slowest |
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Richter Scale |
base-10 logarithmic scale (magnitude 1.0 does 1 damage, but mag 2.0 does 10 damage, and mag 3 does 100 damage) (goes by tens) |
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Mercalli Scale |
measures the intensity (e.g. II-III is weak, IV light, V moderate, VI-VII strong, VIII Severe, IX Violent, X + extreme) |
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Moment magnitude |
measures how much energy is released |
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Tsunami |
super wave that is made when there is an earthquake at sea |
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Liquefaction |
when the ground gets moisture from water and things sink into the ground (cars, buildings, even people!) (then the ground re-solidifies, making everything stuck! Not a happy person, especially if you got stuck!!!) |
