Term
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Definition
| Release of energy from rock layers moving along a fault |
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Term
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Definition
| a wave of energy that travels through the earth, away from an earthquake in all directions |
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Term
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Definition
| Wave that causes rocks to travel in back and forth direction (push and pull). Move faster. Move through liquid and solid |
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Term
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Definition
| Wave that causes rocks to travel in a side-to-side direction. Secondary wave. Move through solids only. |
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Term
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Definition
| Wave that moves like an ocean wave, Causes most damage. |
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Term
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Definition
| Instruments located near the Earth to record seismic waves |
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Term
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Definition
| Tracing of earthquake motion created by seismograph |
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Term
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Definition
| Break in Earth's crust where blocks of crust slide relative to each other |
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Term
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Definition
| The point on Earth's surface directly above where the earthquake starts |
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Term
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Definition
| Point along fault in which first motion of earthquake occurs |
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Term
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Definition
| Amount of time between S and P waves on a seismograph. P waves are fastest so arrive first. |
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Term
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Definition
| Measures the amount of energy an earthquake releases. Each increase on the Richter is 30 times more energy. |
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Term
| Modified Mercalli Intensity Scale |
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Definition
| Measures the intensity of earthquakes or how the earthquake feels and the amount of damage. |
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Term
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Definition
A - focus
B - epicenter
C - fault |
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Term
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Definition
| Reverse Fault. Hanging wall moves up due to compression. Found at convergent boundaries. |
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Term
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Definition
| Triangulation to determine epicenter. Epicenter is where three circles intersect. San Francisco |
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Term
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Definition
| Normal fault. Hanging wall moves down. Created by tension at divergent plate boundaries. |
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