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| An opening in the earth's crust that erupts gases ash and lava |
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| Opening where magma escapes |
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| Steep sided depression inside a volcano |
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| Divergent boundaries like iceland |
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| Convergent boundaries are the most common |
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| Hot spots which are weak spots in the crust like the Hawaiian islands |
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| Amount of dissolved gases and water vapor |
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| Shield volcano- gentle slope(mostly lava) |
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| Cinder cone- steep slope (mostly ash) |
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| Composite cone- intermediate slope ( ash and lava mix$ |
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| Lava flows over property, covered with ash, poisonous gases cause acid rain, fires from burning ash or hot lava |
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| clumps of ash stuck together |
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