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28 Cards in this Set
- Front
- Back
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a type of rock formed by molten rock material called magma
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igneous
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rock that consists of bits and pieces of other rocks
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sedimentary
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What is viscosity?
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measure of the resistance to flow
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What are rock fragments thrown into the air during a volcanic eruption?
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tephra
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molten rock
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magma
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rock beneath the crust
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intrusive igneous rock
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lava rock on earth's surface
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extrusive igneous rock
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2 factors that affect viscosity
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gas content and composition
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an opening in the crust from which lava flows
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vent
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bowl shaped depression around an opening in the crust
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crater
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a cloud of rapidly moving extremely hot volcanic material
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pyroclastic flow
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depression caused by a collapsed magma chamber
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caldera
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largest type of volcano; a mountain with broad sloping sides
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shield volcano
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cinder cone volcano
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steep sided and forms when material is ejected and falls back down to pile up around the vent
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large volcanoes that form when layers of volcanic fragments alternate with lava
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composite volcanoes
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composite volcano
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shield volcano
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In a/an ___experiment you keep all things the same except the thing your are trying to investigate?
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controlled
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Describes all factors that could change in an experiment.
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varible
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The part of the experiment that does not change.
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constant
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The variable that responds; the outcome.
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dependent variable
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The part of the experiment that is purposely changed by the experimenter.
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independent variable
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Formed by fragmentation as a result of volcanic or igneous action.
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pyroclastic
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State of being divided into parts.
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fragmentation
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A scientist who studies volcanoes and volcanic phenomenon (observed remarkable wonder)
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volcanologist
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Balloon-like mounds that form when lava erupts under water or empties into the ocean.
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pillow lava
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Personal belongings
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paraphernalia
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The tendency to resist flow; a property of liquids.
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viscosity
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