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4
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a slab of volcanic rock formed when magma squeezed layers of rock together
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5
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liquid magma that reaches the surface
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6
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a steep cone shaped volcano
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7
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a weak spot in the crust where magma has come to the surface.
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8
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the flow of ash, cinders, bombs and gases down the side of a volcano
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9
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a wide volcano
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10
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a large mass of rocks formed when a large body of magma cools outside the crust
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13
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a deposit of hardened magma in a volcanoes pipe
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14
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A string of volcanoes that from as a result of subduction
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16
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the pocket beneath the volcano where magma collects
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19
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An area at west of the americas, where earth quakes are common.
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21
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a long tube in which magma moves from the magma chamber and out the volcano
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1
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the large hole at the top of a volcano formed when the roof of the magmas chamber collaspses
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2
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an area where magma deep in the mantle melts through the crust above it
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3
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a bowl shaped opening of a volcano
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5
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the area covered by lava as it flows out a vent
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6
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steep cone shaped volcano, ash and lava alternate
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11
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the opening in which molten rock and gas leave the volcano
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12
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a slab of volcanic rock formed from magma
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15
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a volcano that is not currently active but could be in the future
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17
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the molten mixture of rock-forming substances, gases, and water from the mantle
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18
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this determines how explosive a volcanoes eruption is
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20
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a volcano that will most likely never erupt again
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