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17 Cards in this Set
- Front
- Back
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An opening in the earth that erupt gases, lava and ash.
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Volcano
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The world's most active volcano in Hawaii
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Kilauea
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THe world's largest volcanic eruption in Indonesia
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Krakutau
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Plate boundry where plates move apart leaving cracks on the surface where lava flows out
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Divergent
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Plate boundry where plates move together forming mountain-shaped volcanoes.
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Convergent
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An area that is unusually hot and can be where volcanoes are formed
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Hot spot
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Two types of volcanic rock that are formed during eruptions
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Pahoehoe
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The Devil's Tower in Wyoming is an example of this.
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Volcanic Neck
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Forms when magma enters vertical cracks and hardens
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dike
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Froms when magma enters horizontal cracks and hardens
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sill
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An intrusive feature that forms when magma body cools before reaching the surface
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batholith
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Intrusive features are exposed by
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erosion
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Cooled magma forms
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igneous rock
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When the top of a volcano collapses and forms a depression in the ground after an eruption
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caldera
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Mt. St. Helen's location
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Washington
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A large cloud that erupts from a vocano carrying ash and debris at extremely fast speeds is a
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pyroclastic flow
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Gas compound from volcanoes that causes water to become acidic, brown, and smelly
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sulfur
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