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21 Cards in this Set
- Front
- Back
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Stress that occurs when forces act to squeeze an object |
Compression |
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A break in a body of rock along which one block slides relative to another |
Fault |
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The bending of rock layer due to stress |
Folding |
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The sinking of regions of the Earth's crust to lower elevations |
Subsidence |
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Stress that occurs when forces act to stretch an object |
Tension |
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The rising of regions of the Earth's crust to higher elevations |
Uplift |
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The bending, tilting, and breaking of the Earth's crust; the change in the change in the shape of rock in response |
Deformation |
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The body of molten rock that feeds a volcano |
Magma chamber |
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An opening at the surface of the Earth through which volcanic material passes |
Vent |
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A vent or fissure in the Earth's surface through magma and gases are expelled |
Volcano |
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A volcanically active area of Earth's surface, commonly far from a tectonic plate boundary |
Hot spot |
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An area of deep cracks that forms between two tectonic plates that are pulling away from each other |
Rift zone |
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The sudden return of elastically deformed rock to its underformed shape |
Elastic rebound |
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A seismic wave that causes particles of rock to move in a back - and - forth direction |
P wave |
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A seismic wave that causes particles of rock to move in a side - to - side direction |
S wave |
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A wave of energy that travels through the Earth, away from an earthquake in all directions |
Seismic wave |
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The study of earthquakes |
Seismology |
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The point on Earth's surface directly above an earthquake's starting point, or focus |
Epicenter |
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The point along a fault at which the first motion of an earthquake occurrs |
Focus |
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A tracing of earthquake motion that is created by a seismograph |
Seismogram |
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An instrument that records vibrations in the ground and determines the location and strength of an earthquake |
Seismograph |
