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en.wikipedia.org/wiki/Volcano

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava .... Not only do stratovolcanoes have greater pressure build up from the underlying lava flow than shield volcanoes, but their fissure vents and ...

www.livescience.com/56-volcanoes-work.html

Nov 1, 2004 ... As the Philippine's Mount Pinatubo showed in 1991, a volcano can create a cloud of sulfuric acid that encircles the entire planet. Volcanoes ...

science.howstuffworks.com/nature/natural-disasters/volcano.htm

Volcanoes are some of nature's most awe-inspiring displays, with everything from exploding mountaintops to rivers of lava. Learn how all the different types of ...

www.ask.com/youtube?q=How+Do+Volcanoes+Work&v=QUWdkHPm4os
Apr 16, 2009 ... I'm doing. A volcano for my science fair project and my question is gonna be how volcanos work and I'm gonna write down everything that man ...

www.nytimes.com/video/science/100000003431211/how-it-happens-volcanic-eruptions.html

Jan 5, 2015 ... The eruption of a volcano can be one of the planet's most destructive events — spewing huge amounts of rock, gas and ash that can kill people.

www.weatherwizkids.com/weather-volcano.htm

An extinct volcano is one which has erupted thousands of years ago and there's no possibility of eruption. Why do volcanoes erupt? The Earth's crust is made up  ...

www.geology.sdsu.edu/how_volcanoes_work

This website is an educational resource that describes the science behind volcanoes and volcanic processes. The site is sponsored by NASA under the ...

www.scientificamerican.com/article/what-causes-a-volcano-to

When a part of the earth's upper mantle or lower crust melts, magma forms. A volcano is essentially an opening or a vent through which this magma and the ...

news.softpedia.com/news/How-Do-Volcanoes-Work-69925.shtml

Nov 3, 2007 ... The world "volcano" comes from the Roman god of fire Vulcan, the equivalent of Hephaistos in the Greek mythology. In the ancient times, ...