Volcanoes: Links

A volcano is a rupture in the earth's crust through which magma, ash, steam and other gases escape from below the surface. They are usually found at the boundaries of tectonic plates, where the plates converge or diverge, but may also appear in the middle of plates above so called mantle 'hot spots'. Volcanoes have also been found on other planets and moons.

On the web


  • Earth Story (BBC documentary, 1998) Episode 3 Ring of Fire on volcanoes and subduction zones (youtube | videosoft)