6 Terms
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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.
Industry: Natural environment
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Volcano
Magnitude
Natural environment; Volcano
A numerical expression of the amount of energy released by an earthquake, determined by measuring earthquake waves on standardised recording instruments (seismographs. ) The number scale for ...
Moho
Natural environment; Volcano
Also called the Mohorovicic discontinuity. The surface or discontinuity that separates the crust from the mantle. The Moho is at a depth of 5-10 km beneath the ocean floor and about 35 km below the ...
Mudflow
Natural environment; Volcano
A flowage of water-saturated earth material possessing a high degree of fluidity during movement. A less-saturated flowing mass is often called a debris flow. A mudflow originating on the flank of ...
Nuees ardentes
Natural environment; Volcano
A French term applied to a highly heated mass of gas-charged ash which is expelled with explosive force and moves hurricane speed down the mountainside.
Matrix
Natural environment; Volcano
The solid matter in which a fossil or crystal is embedded. Also, a binding substance (e.g., cement in concrete).
Miocene
Natural environment; Volcano
An epoch in Earth's history from about 24 to 5 million years ago. Also refers to the rocks that formed in that epoch.
