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VolcanoesV

volcanoes

VocabAnswer
Volcano An opening in the earths crust that erupts gases, ash, and lava.
Hot Spot Hot rock forced up as a result of the boundary between the mantle and the core.
Silica A compound composed of the elements silicon and oxygen.
Pahoehoe Hot lava with a low viscosity.
Aa Stiff, slow, cooler lava with a high viscosity.
Viscosity The ability of a liquid to flow.
Fissure Large cracks on the Earths surface.
Tephra Bits of rock and lava soildified dropping from the air.
Pyroclastic Flow When volcano ash falls (rush) down a volcano.
Created by: webrocker8
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