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8 Cards in this Set
- Front
- Back
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volcano
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a vent or fissure in the Earth's surface through which magma and gases are expelled
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magma chamber
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the body of molten rock that feeds a volcano
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vent
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an opening at the surface through which volcanic material passes
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crater
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a bowled-shaped depression that forms on the surface of an object when a failing body strikes the object's surface or when an explosion occurs
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caldera
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a large, circular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink
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lava plateau
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a wide, flat landform that results from repeated nonexplosive eruptions of lava that spread over a large area
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rift zone
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an area of deep cracks that forms between two tectonic plates that are pulling away from each other
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hot spot
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a volcanically active area of Earth's surface, commonly far from a tectonic plate boundary
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