EARTH SCIENCE
VOLCANOES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Volcanic ash burying an entire town
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lava setting fire to and burning everything in its path
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jet plane stalling due to ash being sucked into its engine
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volcano belching out hot clouds of deadly gas
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all of the above are hazards of a volcanic eruption
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Detailed explanation-1: -Volcanoes spew hot, dangerous gases, ash, lava, and rock that are powerfully destructive. People have died from volcanic blasts. Volcanic eruptions can result in additional threats to health, such as floods, mudslides, power outages, drinking water contamination, and wildfires.
Detailed explanation-2: -Debris avalanches and landslides are common, but are not necessarily caused by an actual volcanic eruption or volcanic activity.
Detailed explanation-3: -Volcanoes are composite hazards. There are both primary and secondary hazards which can be caused by volcanic eruptions. The primary hazards include pyroclastic flows, air-fall tephra, lava flows and volcanic gases.
Detailed explanation-4: -Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber.
Detailed explanation-5: -Lava. Lava (molten rock) can erupt as fire fountains or lava flows (when it is runny) or as steep-sided domes (when it is viscous). Pyroclastic flows. Phreatic explosions. Lahars. Jökulhlaups. Landslides. Volcanic earthquakes. Tsunamis. More items