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volcano a weak spot in the earth's crust
magma a substance that comes from the mantle and is a mixture of rock-forming substances, gases, and water
lava when magma reaches the surface
ring of fire one major volcanic belt - formed by the many volcanoes that rim the pacific ocean plate boundaries
island arc the resulting volcanoes creating a string of islands
hot spot an area where magma from deep within the mantle melts through the (earth's) crust
magma chamber beneath a volcano, magma collects in a pocket
vent gas and molten rock leave the volcano through an opening
pipe magma moves through tis long tube in the ground-which connects the magma chamber to the Earth's surface
lava flow an area covered by lava as it pours out of a vent
crater a bowl-shaped are that may form at the top of a volcano around its central vent
quiet eruption
Created by: richdenwitz2