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Ch 18.1 Vocab- Volcanism

Word Bank: compositevolcanoes, cindercones, shieldvolcano, calderas, crater, vent, conduit, floodbasalts, fissures, hotspots, volcanism
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Across
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All the processes associated with the discharge of magma, hot fluids, ash, and gases
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Tubelike structure that lava can use to reach the surface
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Cracks in the Earth's crust
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Opening through which lava emerges to the surface
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Formed when lava flows out of long cracks in the Earth's crust
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Formed of layers of ash and hardened chunks of lava from violent eruptions alternating with layers of lava that oozed downslope before solidifying
Down
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Formed when a volcano ejects small pieces of lava into the air such as cinders, scoria, or tephra and then it falls back to the Earth and piles up around the vent
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Mountain with broad, gently sloping sides and a nearly circular base
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Unusually hot regions of Earth's Mantle where high-temperature plumes of magma rise to the surface
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Large depressions at the top of a volcano- 1-100 km in diameter
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Bowl-shaped depression at the top of a volcano-less than 1 km in diameter