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Ch 18.1 Vocab- Volcanism

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