geology review 1c – Flashcards
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the number of fatalities from the Mr. Pinatubo eruption was realtively low because
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the eruption was predicted successfully and the area was evacuated
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seismic activity serves as a tool of volcanic forecasting because
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moving magma in the sub-surface causes small earthquakes
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why is the geologic history of a volcano important in hazard prediction
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the geologic history reveals the frequency and the type of eruption
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why is topographic monitoring sometimes useful in forecasting a volcanic eruption
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a volcano sometimes swells as lava moves into it
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the eruption of Mt._______ in 1991 killed over 20 scientists and journalists with pyroclastic flows
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Unzen
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viscosity of magma is controlled by
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temperature and silicon content of the magma
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the shape of shield volcanoes is a function of
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lava viscosity
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why do composite volcanoes consist of alternating lava and pyroclastic layers
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composite cones are created by a mixture of pyroclastic debris and lava flows
