First, the Geyser Observation and Study Association's website provides numerous materials and images about geysers all over the world (1). Students and educators can find a helpful glossary and a fun, short quiz titled Guess the Geyser. Next, the USGS provides a concise explanation and fantastic image of a geyser (2). Visitors can discover where the leading geysers are found and how eruptions can...

The Geyser Observation and Study Association is a non-profit scientific and educational corporation who's purpose is the "collection and dissemination of information about geysers and other geothermal phenomena in Yellowstone National Park and elsewhere". The Web site has descriptions and photographs of geysers from around the world with an emphasis on Yellowstone and Old Faithful. Other features...

Yellowstone National Park was established on March 1, 1872, as the first national park in the world. The overwhelming and unique beauty found in this natural wonder is truly difficult to describe.This Topic In Depth begin with the excellent National Park Service's (1) official Yellowstone Web Site, which contains the park's history, virtual field trips, park information, visitor guides, web cams,...