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
Sill
Natural environment; Volcano
A tabular body of intrusive igneous rock, parallel to the layering of the rocks into which it intrudes.
Trachyte
Natural environment; Volcano
A group of fine-grained, generally porphyritic, extrusive igneous rocks having alkali feldspar and minor mafic minerals as the main components, and possibly a small amount of sodic plagioclase.
Shear waves
Natural environment; Volcano
Earthquake waves that move up and down as the wave itself moves. For example, to the left.
Avalanche
Natural environment; Volcano
A large mass of material or mixtures of material falling or sliding rapidly under the force of gravity. Avalanches often are classified by their content, such as snow, ice, soil, or rock avalanches. ...
Asthenosphere
Natural environment; Volcano
The shell within the earth, some tens of kilometres below the surface and of undefined thickness, which is a shell of weakness where plastic movements take place to permit pressure adjustments.
Blister
Natural environment; Volcano
A swelling of the crust of a lava flow formed by the puffing-up of gas or vapour beneath the flow. Blisters are about 1 metre in diameter and hollow.
