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Volcanoes

TermDefinition
Magma molten material beneath or within the earth's crust, from which igneous rock is formed.
Dormant lying asleep or as if asleep; inactive, as in sleep; torpid: The lecturer's sudden shout woke the dormant audience.
Volcano a vent in the earth's crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals.
Lava the molten, fluid rock that issues from a volcano or volcanic vent.
Vent an opening, as in a wall, serving as an outlet for air, smoke, fumes, or the like.
Conduit a pipe, tube, or the like, for conveying water or other fluid.
Ash the powdery residue of matter that remains after burning.
Volcanologist the scientific study of volcanoes and volcanic phenomena.
Geyser a hot spring that intermittently sends up fountain like jets of water and steam into the air.
Extinct no longer in existence; that has ended or died out: an extinct species of fish.
Active being in a state of existence, progress, or motion: active hostilities.
Crater the cup-shaped depression or cavity on the surface of the earth or other heavenly body marking the orifice of a volcano.
Igneous Rock Rocks formed by the cooling and solidifying of molten materials. Igneous rocks can form beneath the Earth's surface, or at its surface, as lava.
Created by: romjukesm