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13 Cards in this Set
- Front
- Back
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Pyroclastics
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Flows of ash. Responsible for most volcanoe-related deaths
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Tephra
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Ash, small fragments, and bombs
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Lahar
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Volcanic mudflows composed of sediment of sand-silt grain
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Fumarole
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An opening in the planets crust which emits fumes and gases.
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Hot Spot
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exist in he middle of tectonic plates where a crustal weakness allows molten material to penetrate from the Earth's interior
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Shield Volcanoes
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dome shaped, weathered down, not very explosive. Lava can flow for a long time-hawaii
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Strato Volcanoes
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Tall steep volcanoes. Very dangerous and explosive
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Where are volcanoes likely to occur
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Hot spots (Hawaii), rift zones (Iceland), subduction zones (ring of fire)
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Primary hazards of volcanoes
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Pyroclastic flows, air fall tephra, lava flows, volcanic gas
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Secondary hazards of volcanoes
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Ground deformation, lahars, landslides, and tsunamis
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Protection of Volcanoes
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Damming and diverting of lava flows, and stronger roofs
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Adaptation of Volcanoes
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Forecasting and warning-precursors to eruption: ground deformation and earthquake activity
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Environmental Control
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Water sprays, artificial barriers, explosives
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