EARTH SCIENCE
VOLCANOES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Use seismographs to predict volcanic eruptions.
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Install devices to monitor the levels of gases emitted by the volcano.
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Build houses with no vents to avoid contact with lethal gases.
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Build tall houses with steel reinforcements to withstand tremors.
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Detailed explanation-1: -RETROGRADE BOILING OF MAGMA AS THE MAIN CAUSE OF EXPLOSIONS. Obviously, catastrophic volcanic eruptions are associated with the simultaneous mass release of gas bubbles from the melt, leading to a sharp increase in the volume of material in the magma chamber, i.e., to the explosion.
Detailed explanation-2: -Close all windows, doors, and fireplace or woodstove dampers. Turn off all fans and heating and air conditioning systems. Bring pets and livestock into closed shelters.
Detailed explanation-3: -The Volcanic Explosivity Index (VEI) is a scale that describes the size of explosive volcanic eruptions based on magnitude and intensity. The numerical scale (from 0 to 8) is a logarithmic scale, and is generally analogous to the Richter and other magnitude scales for the size of earthquakes.
Detailed explanation-4: -Short-term forecasts primarily use monitoring data (principally seismic, deformation, heat flux, volcanic gas, and fluid measurements) to detect and interpret periods of unrest, whereas long-term forecasts primarily rely on the geologic record of past eruptions.