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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

Stratovolcano

Natural environment; Volcano

A volcano composed of both lava flows and pyroclastic material.

Vulcanian

Natural environment; Volcano

A type of eruption consisting of the explosive ejection of incandescent fragments of new viscous lava, usually on the form of blocks.

Viscosity

Natural environment; Volcano

A measure of resistance to flow in a liquid (water has low viscosity while honey has a higher viscosity. )

Ultramafic

Natural environment; Volcano

Igneous rocks made mostly of the mafic minerals hypersthene, augite, and/or olivine.

Trachybasalt

Natural environment; Volcano

An extrusive rock intermediate in composition between trachyte and basalt.

Vent

Natural environment; Volcano

The opening at the earth's surface through which volcanic materials issue forth.

Streak

Natural environment; Volcano

The colour of a mineral in the powdered form.

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