- Volcano World
Volcano World
http://volcano.oregonstate.edu
- Volcanoes
Volcanoes
http://www.learner.org/exhibits/volcanoes
- How Volcanoes Work
How Volcanoes Work
http://www.geology.sdsu.edu/how_volcanoes_work
- Volcano
http://encarta.msn.com/encyclopedia_761570122/Volcano.html?ENCMauth=tWOlzJ7PtV73...
- Volcano Photos, Information and Stories
Volcanoes! a site for exploration and discovery of photos, stories and information about volcanoes.
http://www.volcanoes.com
- USGS: Volcanoes
USGS: Volcanoes
http://pubs.usgs.gov/gip/volc
- Volcanoes of the World
Volcanoes of the World
http://www.volcano.si.edu/world
- Volcano - Wikipedia, the free encyclopedia
A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot, molten rock, ash, and gases to escape from below the surface. Volcanic activity involving the extrusion of rock tends to form mountains or features like mountains over a period of time. Volcanoes are generally found where tectonic plates are pulled apart or come together.Plate tectonics and ... · Volcanic features · Erupted material
http://en.wikipedia.org/wiki/Volcano
- Smithsonian/USGS Weekly Volcanic Activity Report
Smithsonian/USGS Weekly Volcanic Activity Report
http://www.volcano.si.edu/reports/usgs
- Volcanoes of the United States
Volcanoes of the United States
http://pubs.usgs.gov/gip/volcus
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