What are the three most important phenomena that geologists routinely monitor on an active volcano? Ground deformation, smoke, and ground temperature. Weather, volcano temperature, and smoke. Ground color, smoke, and ground vibration Ground deformation, gas, and ground vibration.
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The Deep Dive
Geologists closely monitor ground deformation, which indicates changes in a volcano's shape due to magma movement, and can often signal an impending eruption. They use GPS and satellite imagery to detect those changes, making it like playing a real-life game of “Twister” with the Earth! Gas emissions are another crucial monitoring phenomenon. Variation in gas output—mainly sulfur dioxide—can hint at volcanic activity; a sudden increase might suggest magma is rising. Picture a volcano as a giant soda bottle ready to fizz over whenever it feels like it!
