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Volcano

A vent or opening in a planet's surface that lets out pressurized molten rocks or magma, and gases from the inner core. Volcanoes come in various shapes and structure, but the most common ones are mountain-like structures with a crater at the summit.

Contributors in Volcano

Volcano

conduit

Natural environment; Volcano

A passage followed by magma in a volcano.

continental crust

Natural environment; Volcano

Solid, outer layers of the earth, including the rocks of the continents.

continental drift

Natural environment; Volcano

The theory that horizontal movement of the earth's surface causes slow, relative movements of the continents toward or away from one another.

country rocks

Natural environment; Volcano

The rock intruded by and surrounding an igneous intrusion.

crater

Natural environment; Volcano

A steep-sided, usually circular depression formed by either explosion or collapse at a volcanic vent.

craton

Natural environment; Volcano

A part of the earth's crust that has attained stability and has been little deformed for a prolonged period.

curtain of fire

Natural environment; Volcano

A row of coalescing lava fountains along a fissure; a typical feature of a Hawaiian-type eruption.

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