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volcano
volcanoes on the flash card
Term | Definition |
---|---|
magma | hot fluid or semi-fluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling. |
dormant | That is the definition of active used by the Global Volcanism Program in their catalogs. A dormant volcano would then be one that hasn't erupted in the past 10,000 years, but which is expected to erupt again. |
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. |
lava | hot molten or semi-fluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this. |
vent | an opening that allows air, gas, or liquid to pass out of or into a confined space. |
conduit | A volcano conduit is the pipe or vent at the heart of a volcano where material wells up from beneath the surface. |
ash cloud | Cloud of gas, steam, ash, dust, and coarser fragments that forms during an explosive volcanic eruption and commonly gets blown long distances. Also called an eruption cloud. |
vulcanologist | A volcanologist or vulcanologist is a geologist who studies the processes involved in the formation and eruptive activity of volcanoes and their current and historic eruptions. |
geyser | volcanology A boiling natural spring which throws forth at frequent intervals jets of water, mud etc., driven up by the expansive power of steam. |
extinct | the volcano can not ever erupt again |
active | the volcano can possibly erupt again. |
crater | a large bowl-shaped cavity in the ground or on a celestial object, typically one caused by an explosion or the impact of a meteorite. |
igeous 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. |