Term
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Definition
| Release of energy from rock layers moving along a fault |
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Definition
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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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Definition
| Wave that causes rocks to travel in back and forth direction |
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Term
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Definition
| Wave that causes rocks to travel in a side-to-side direction |
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Term
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Definition
| Wave that moves like an ocean wave |
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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 an earthquakes starting point |
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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
| a technique for establishing the distance between any two points |
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Term
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Definition
| Amount of time between S and P waves on a seismograph |
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Term
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Definition
| Measures the strength of earthquakes |
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Term
| Modified Mercalli Intensity Scale |
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Definition
| Measures the intensity of earthquakes |
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Term
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Definition
| A vent or fissure in the Earth's surface in which magma and gasses are expelled |
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Definition
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Definition
| The body of molten rock that feeds a volcano |
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Term
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Definition
| A vent at the opening of the earth in which through volcanic material passes |
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Term
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Definition
| Dust-sized particles of lava that come from an eruption |
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Term
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Definition
| Enormous amounts of hot ash, dust, and gases are ejected from a volcano |
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Term
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Definition
| Built of shields of lava from nonexplosive eruptions |
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Term
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Definition
| Made of pyroclastic material from moderately explosive eruptions |
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Term
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Definition
| Formed from explosive eruptions of pyroclastic material followed by quieter flows of lava |
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Term
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Definition
| Funnel-shaped vent near top central vent of volcano |
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Term
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Definition
| Large, semicircle depression formed when magma chamber partially empties and causes ground above to sink |
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Term
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Definition
| Flat landform from nonexplosive eruptions of lava |
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