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Terms and there definitions of the word we are learning,

        Help!  

Term
Definition
Lava   show
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Volcano   show
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show The molten mixture of rock-forming substances, gases, and water from the mantle.  
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show A major belt of volcanoes that rims the Pacific Ocean.  
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Island arc   show
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show An area where magma from deep within the mantle melts through the crust above it.  
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Pipe   show
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show The opening through which molten rock and gas leave a volcano.  
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Magma chamber   show
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show The area covered by lava as it pours out of a volcano's vent.  
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show A bowl-shaped area that forms around a volcano's central opening.  
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silica   show
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Pahoehoe   show
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show A slow-moving type of lava that hardens to form rough chunks; cooler than pahoehoe.  
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pyroclastic flow   show
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show A volcano that is erupting or has shown signs of erupting in the near future.  
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show A volcano that does not show signs of erupting in the near future sleeping.  
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show A volcano that will not erupt again.  
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hot spring   show
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show A fountain of water and steam that builds up pressure underground and erupts at regular intervals.  
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show Energy from water or steam that has been heated by magma.  
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shield volcano   show
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cinder cone volcano   show
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show A tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic material.  
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show The large hole at the top of a volcano formed when the roof of a volcano's magma chamber collapses.  
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volcanic neck   show
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show A mass of rock formed when a large body of magma cooled inside the crust.  
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