Hot Springs and Geysers

Today’s Walking Classroom podcast discusses hot springs and geysers, two related types of hydrothermal activity found in areas near volcanoes. Hydrothermal comes from two Greek words, hydro meaning water and therme meaning heat. Hot springs form when water that has risen to the surface of the earth collects in heated pools while geysers shoot fountains of water and steam into the air. Hydrothermal activity occurs all over the world, but is observed mostly in Iceland, New Zealand, and Yellowstone National Park.