Volcano

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.

Industry: Natural environment

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Volcano

Stalactite

Natural environment; Volcano

A cone shaped deposit of minerals hanging from the roof of a cavern.

Seismologist

Natural environment; Volcano

Scientists who study earthquake waves and what they tell us about the inside of the Earth.

Andesite

Natural environment; Volcano

Volcanic rock (or lava) characteristically medium dark in colour and containing 54 to 62 percent silica and moderate amounts of iron and magnesium.

Ash

Natural environment; Volcano

Fine particles of pulverised rock blown from an explosion vent. Measuring less than 1/10 inch in diameter, ash may be either solid or molten when first erupted. By far the most common variety is ...

Ash flow

Natural environment; Volcano

A turbulent mixture of gas and rock fragments, most of which are ash-sized particles, ejected violently from a crater or fissure. The mass of pyroclastics is normally of very high temperature and ...

Alkalic

Natural environment; Volcano

Rocks which contain above average amounts of sodium and/or potassium for the group of rocks for which it belongs. For example, the basalts of the capping stage of Hawaiian volcanoes are alkalic. ...