The flashcards below were created by user
jsn_man
on FreezingBlue Flashcards.
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viscosity
the resistance of a liquid to flow; a thick a stick consistancy
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pyroclastic flow
a dense cloud of superheated gases and rock fragments that moves quickly downhill from an erupting volcano
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ash
volcanic dust; fine grained lava that erupts or flows from a volcano before settling on the ground
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lahars
landslide of volcanic material; a landslide or mudflow of volcanic debris, usually after a heavy rainfall
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dormant
describes a volcano that is no longer active but may become active in the future
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extinct
describes a volcano that is no longer active and is unlikely to erupt again
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caldera
Large crater at the top of the volcano; caused by a major eruption fallowed by the collapse of the volcano's cone. It may later become a lake.
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volcano
a hill or mountain formed by material that erupts onto the Earth's surface; caused by action of magma below the surface
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tephra
bits of rock or solidified lava dropped from the air during an explosive volcanic eruption
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geyser
a type of hot spring that shoots water into the air
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cinder cone volcano
composed of tephra; explosive eruption; small in size with a steep slope
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shield volcano
formed from basaltic lava; quiet eruption; broad and wide with a gentle slope
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composite cone volcano
formed from pyroclastic material layered with lava flows and volcanic debris; explosive eruption; huge with a steep slope
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