CJKN+3.1

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Vocabulary:
Volcano: A weak spot in the crust where molten material or magma, comes through the surface. Magma: A molten mixture of rock-forming substances, gases, and water from the mantle. (not lava) Lava: It is magma, but only when it reaches earth's surface Ring of fire: A belt of volcanoes that rims the pacific ocean. Island arc: A string of islands created by the volcanoes that are near deep ocean trenches. Hot spot: An area where magma from the depths of the mantle melts through the crust like a blow torch.

Outline

 * What is a Volcano?
 * Weak spot in crust where magma comes out
 * Location of Volcanoes
 * all around the world
 * near islands
 * ring of fire
 * Where land meets water
 * Volcanoes at diverging plate boundaries
 * along mid-ocean ridge
 * Hot spot volcanoes
 * in middle of continental plate
 * Note: The plate slowly drifts over hot spot so every island is formed by one hot spot