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The vibrations produced by the breaking of rock |
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Rock above the fault surface moves downward in relation to rock below the fault surface |
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Rock is forced up and over the rock below the fault surface |
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Rocks on either side of the fault are moving past each other without much upward or downward movement |
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pressure wave generated by an earthquake |
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point underground where earthquake begins |
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point on earth's surface right above the focus |
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next fastest, underground |
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slowest, travel on surface, most destructive |
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instrument used to measure earthquakes (size and location) |
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measurement of earthquake magnitude |
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when ground acts like a ''liquid'' during an earthquake |
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large wave caused by an earthquake |
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t/f. a normal fault is when the rock is forced up and over the rock below the fault surface |
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t/f. seismic waves are large waves caused by an earthquake |
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t/f. an epicenter is the point on earth's surface right above the focus |
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t/f. primary waves are the fastest waves |
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Where did the largest recent earthquake (over 4.5 on Richter scale) occur? |
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How many earthquakes occur each year? |
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How many of them can actually be felt? |
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Where was the largest earthquake ever recorded? |
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Where was the world's most deadly earthquake? |
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How often do earthquakes with a magnitude between 8.0 and 8.9 occur each year? |
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