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and the rate at which gas bubbles and solids move through a magma. Low
viscosity magmas, such as some basalts, can form very long lava flows very
rapidly. In contrast, 3. W hat determines whether volcanic activity will be a lava flow or a pyroclastic
eruption? 4. How might a volcanic eruption create its own weather? 5. Volcanoes in the ocean tend to erupt peacefully, whereas volcanoes on continents
tend to erupt explosively. What explains the differences?...
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- Fall '11