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What is Thermal Activity

What is Thermal Activity

Yellowstone is full of geysers, fumeroles, hot springs, and mudpots. All of them involve something called “thermal activity”. For thermal activity to happen on earth, there must be three things: Heat source Ground water Cracks or “fissures” in the earth The water for Yellowstone’s geysers comes from ground water – snow and rain. The water […]

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