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16 Cards in this Set
- Front
- Back
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focus: |
The place inside the earth where the earthquake starts |
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epicenter |
The spot on land directly above the focus.
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seismograph |
An instrument that detects and measure earthquakes |
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seismogram |
A paper record of an earthquake event. |
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The Richter scale |
measures the magnitude of an earthquake.
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Seismic waves |
Vibrations released during an earthquake
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primary wave |
The fastest moving seismic waves, least destructive, travels trough solids, liquids, and gases, first wave recorded
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Secondary (S) wave: |
The seismic wave that is recorded second, and causes a little more damage than P waves
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Surface, L waves |
The seismic waves that cause the most destruction, are the slowest, and the third wave recorded
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ring of fire |
The major earthquake and volcano zone in the world is the around the Pacific Ocean.
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transform boundaries |
Where earthquakes occur |
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Strike-slip fault |
caused when two plates scrape alongside one another |
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tsunami |
A huge wave caused by an underwater earthquake. |
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Normal fault |
Rocks are pulled apart at this fault. |
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Rocks are pulled apart at this fault. |
Warmer matter rises, cooler matter sinks
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The Mercalli Scale |
measures earthquake damage using Roman Numerals
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