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Volcanoes
Word | Definition |
---|---|
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: |
Volcano | a vent in the earth's crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals. |
Lava | he 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 cloud | the powdery residue of matter that remains after burning. |
Vulcanologist | the scientific study of volcanoes and volcanic phenomena. |
Geyser | a hot spring that intermittently sends up fountainlike 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 | engaged in action; characterized by energetic work, participation, etc.; busy: |
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 | Igneous rock (derived from the Latin word ignis meaning fire) is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava |