Define volcano, lava and vent. Name the different materials that are given out during a volcanic eruption.?
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Volcano :- a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapour, and gas are or have been erupted from the earth's crust.
Vent:- A volcanic vent is an opening exposed on the earth's surface where volcanic material is emitted.
Lava:- hot molten or semi-fluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
Volcanic eruptions produce three types of materials: gas, lava, and fragmented debris called tephra.
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