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17 Cards in this Set
- Front
- Back
a volcano that still erupts from time to time
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active volcano
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a coral reef, or a number of coral reefs, that surround a body of water in the sea
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atoll
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a large circular hole in the top of a volcano, caused when the top of a volcano falls inward
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caldera
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a wide, bowl-shaped opening at the top of a volcano
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crater
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a volcano that has not erupted for a long time, but may erupt again at some time
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dormant volcano
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the eplosion of a volcano
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eruption
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a volcano that has not erupted for a long time and can never erupt again
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extinct volcano
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places where magma keeps forcing its way upward from beneath Earth's surface
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hot spots
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melted rock that spurts or flows out of a volcano during an eruption
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lava
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melted rock below Earth's surface
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magma
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thick streams of ash, mud, and water, caused by an erupting volcano or an earthquake
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mudflows
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long, narrow ranges of hills or mountains on land or under the sea
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ridges
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vast sheets of rock that move constantly beneath Earth's surface
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tectonic plates
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an opening at the top or side of a volcano through which lava, ash and gas flow out
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vent
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rock formed when runny lava turns into rock
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basalt
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one kind of rock that has holes created by escaping gas
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pumice
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fine volcanic dust
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ash
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