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30 Cards in this Set
- Front
- Back
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element
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a subtance that can be brocken cown into other substances
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compound
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a substance in which two or more elements are chemicaly changed
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physical property
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any charicteristic of a substance that can be observed or measured without changing the compotion of the substance
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chemical property
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any property of a substance that pruduces a change in composher
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viscosity
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the resistence of a liquid flowing
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silcia
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a mateirial found in magma that is formed from the elemnets oxegen and silcion
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pahoehoe
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a hot fast moving type of lava that hardens to smooth ropelike coils
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aa
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a slow movingtype of lava that hardens to form rough chunks of lava
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magma chamber
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the pocket beneath a volcano where magma collects
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pipe
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a long tube through which magma move from the magma chamber to earths surface
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volcano
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a weak spot in the crust where magma has come to surface
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magma
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the molten mixtureof rock forming substances gases and water from the mantle
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lava
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liquid magma that reaches the surface also the rock formed when liquid lava hardens
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vent
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the opening through which molten rock and gas leave the volcano
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lava flow
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the area covered by lava as it pours out of a volcanos vent
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crayter
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a bowl shaped area that forms a volcanos center
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pyroclastic flow
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the explosin of ash cinders bombs and gases during an explosive volcano
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dormant
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describes a volcano that is not currently active but that may become active in the future
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extinct
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describe a volcano when it cant erupt
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ring of fire
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a major belt of volcanos that rims the pacific coast
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island arc
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a string of islands formed by the volcanos along a deep ocean trench
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hot spot
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an area where deep in the mantle melts through the crust
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shield volcano
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a wide volcano gently sloping mountain made of layers
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cinder corner
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a deep cone shaped hill or small mountain made of volcanic ash cinders and bombs pilled up
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composite
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a tall cone shaped mountain in which layers of lava alternate with layers of ash
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cadera
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the large hole in the top of the volcano formed when the roof of the volcano magma chamber collapsise
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volcanic neck
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a deposit hardend magma in a volcanos pipe
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dike
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a slab of volcanic rock formed when magma forces itself across rock layers
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sill
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a slb of volcanic rock formed when magma squezzes beetween layers of rock
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batholith
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a mass of rock formed when a large body of magma cools inside the crust
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