In one dictionary meaning of the word, a volcano is a vent in the earth's crust through which rock or lava is ejected. In another, a volcano is a cone-shaped hill or mountain built around a vent.
http://hvo.wr.usgs.gov/volcanowatch/1999/99_07_01.html
|
“ |
A volcano is an opening in Earth's crust molten rock and another materials escape onto Earth's surface.
http://wiki.answers.com/Q/What_is_volcano
|
|
Volcano - Wikipedia, the free encyclopedia
|
|
A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot magma, ash and gases to escape from below the surface. The word volcano is derived from the name of Vulcano is...
en.wikipedia.org/wiki/Volcano
|
|
|
Explains what a volcano is and identifies active volcanoes in the United States. ... volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. Gases and rock shoot up through the opening and spill over or fill the air with lava fragments.
|
www.fema.gov/kids/volcano.htm
www.fema.gov/kids/volcano.htm
|
|
|
“ |
A volcano is a large mound of earth and rock which is actually a passage or rupture through the earth's crust leading to liquid hot deposits of magma within the earth's mantle. It is believed that volcanoes are the primary source of land de...
http://www.ehow.com/how_4567109_a-volcano-form.html
|
|
|
|
|
Recovery Funding for U.S. Volcano Observatories to Improve Monitoring and Public Safety ; ... The Volcano Hazards Program has received American Recovery and Reinvestment Act funds for six projects that will benefit volcano monitoring at the high-risk volcanic areas our observatories monitor.
|
volcanoes.usgs.gov/
volcanoes.usgs.gov/
|
|
|
|
This interactive exhibit, part of the Exhibits Collection, explores why volcanic eruptions occur.
|
www.learner.org/exhibits/volcanoes/
www.learner.org/exhibits/volcanoes/
|
|
|
This website is a comprehensive educational resource that describes the science behind volcanoes and volcanic processes ... VOLCANO LANDFORMS ... VOLCANO CROSSWORD...
|
www.geology.sdsu.edu/how_volcanoes_work/
www.geology.sdsu.edu/how_volcanoes_work/
|
|
[vŏl-kā́nō]
