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17 Cards in this Set
- Front
- Back
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What is the focus? |
The place inside the earth where the earthquake starts. |
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What is the epicenter? |
The spot on land directly above the focus. |
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What is a seismograph? |
An instrument that detects and measures earthquakes. |
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What is a seismogram? |
A paper record of an earthquake event. |
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What is the richter scale? |
measures the magnitude of an earthquake. |
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What are seismic waves? |
vibrations released during an earthquake. |
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What is a primary wave? |
the fastest moving seismic waves, least destructive, travels through solids, liquids, and gases, first wave recorded. |
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What is a secondary wave? |
The seismic wave that is recorded second, and causes a little more damage than a P wave. |
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What are surface waves? |
the seismic waves that cause the most destruction. |
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What is the ring of fire? |
the major earthquake and volcano zone in the world is around the Pacific Ocean. |
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What are transform boundaries? |
where earthquakes form. |
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What is a fault strike-slip? |
caused when two when two plates scrape alongside one another. |
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What is a tsunami? |
A huge wave caused by an underwater earthquake. |
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What is a normal fault? |
rocks are pulled apart at this fault. |
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What is a convection current? |
warmer matter rises, cooler matter sinks. |
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What is The Mercalli Scale? |
measures earthquake damage using Roman Numerals. |
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What is Liquefaction? |
Soil acts more like liquid. |
