This site features Flash and QuickTime animations related to groundwater. They contrast the permeability of gravel, sand, silt, and clay, as well as the speed of groundwater movement in rivers, lakes, and aquifers. They...
In this activity, students use laboratory equipment to construct a working simulation of a geyser. When the water is heated to its boiling point, the 'geyser' erupts, spewing its contents, and the cycle starts again....
This magazine article explores the extreme environment of the Rio Tinto, a river in Spain with highly acidic and metal-rich water. The article features the work of Ricardo Amils, a scientist studying the microbial...
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