Volcanoes
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Shield Volcano | A type of volcano usually built almost entirely of fluid lava flows.
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| Cinder Cone | A steep conical hill of tephra (volcanic debris) that accumulates around and downwind from a volcanic vent.
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| Composite Cone | A conical volcano built up by many layers (strata) of hardened lava, tephra, pumice, and volcanic ash.
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| Scoria Cone | Cinder Cone
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| Stratovolcano | Composite Cone
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| Hot Spot | An area of volcanic activity, especially where this is isolated.
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| Fissure | A long, narrow opening or line of breakage made by cracking or splitting, especially in rock or earth.
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| Caldera | A large volcanic crater, typically one formed by a major eruption leading to the collapse of the mouth of the volcano.
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| Pahoehoe Flow | Basaltic lava forming smooth undulating or ropy masses.
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| Block Lava | Basaltic lava in the form of a chaotic assemblage of angular blocks.
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| Pyroclastic Flow | High-density mixtures of hot, dry rock fragments and hot gases that move away from the vent that erupted them at high speeds.
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| Bomb | A lump of lava thrown out by a volcano.
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| Lahar | A destructive mudflow on the slopes of a volcano.
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| Aa Flow | Basaltic lava having a rough surface.
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| Viscosity | The state of being thick, sticky, and semifluid in consistency, due to internal friction.
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| Volatiles | Chemical species that under normal conditions of pressure and temperature exist in the gaseous phase.
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| Continental Volcanic Arc | South America
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| Intraplate Volcanism | Hotspot
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| Volcanic Island Arcs | Offshore volcanoes.
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| Pacific Ring of Fire | An area where a large number of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean.
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Created by:
probinson28
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