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Bookmark or Share- What is a volcano?What is a volcano? an erupting volcano. A volcano is an opening in the earth’s crust through which lava, volcanic ash, and gases escape. Volcanic eruptions are partly driven by pressure from dissolved gas, much as escaping gases force the cork out of a bottle of champagne.
- Volcanoes - National Geographic SocietyArticle. Vocabulary. A volcano is an opening in a planet or moon’s crust through which molten rock, hot gases, and other materials erupt. Volcanoes often form a hill or mountain as layers of rock and ash build up from repeated eruptions. Volcanoes are classified as active, dormant, or extinct.
- Volcanism | Examples, Effects, & Facts | Britannicavolcanism, any of various processes and phenomena associated with the surficial discharge of molten rock, pyroclastic fragments, or hot water and steam, including volcanoes, geysers, and fumaroles.
- Volcano | Definition, Types, & Facts | Britannicavolcano, vent in the crust of Earth or another planet or satellite, from which issue eruptions of molten rock, hot rock fragments, and hot gases. A volcanic eruption is an awesome display of Earth’s power.
- Global Volcanism Program | Current EruptionsOverall, 48 volcanoes were in continuing eruption status as of 19 April 2024. An eruption marked as "continuing" does not always mean persistent daily activity, but indicates at least intermittent eruptive events without a break of 3 months or more.
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