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1
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opening in earth's crust through which magma, gasses, and ash reach the Earth's surface
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3
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to break through; to force out suddenly and violently
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5
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pool of magma near the bottom of a volcano
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6
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opening through which heat or heated material escapes
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9
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place in Earth where the energy of an earthquake is first released
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11
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melted rock that is under the Earth's surface
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13
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wide sloping mountain made of hardened sheets of lava
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14
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usually tall and wide, with steeply sloped sides
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15
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point on Earth's surface directly above the focus of an earthquake
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