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science C3 S1

TermDefinition
Volcano A weak spot in the crust where magma has come to the surface
lava liquid magma that reacher the surface; also the rock formed when the liquid lava hardens
magma The molton mixture of rock-forming substance, gases, and water from the mantle.
Ring of fire A major belt of volcanoes that rims the Pacific Ocean
island arc A string of islands formed by the volcanoes along a deep ocean trench.
hot spot An area where magma from deep within the mantle melts through the crust above it.
shield volcano A wide,gently sloping mountain made of layers of lava and formed by quit eruption
cinder cone volcano A steed-cone shaped hill or mountain made of volcanic ash, cinders, and bombs piled up around a volcano opening
composite volcano A tall, cone-shaped mountain is Which layers of lava alternate with layer of ash and other volcanic material.
Created by: Chapmanaal13
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