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- Volcano - Wikipedia
A volcano is a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface [1]
- Volcano | Definition, Types, Facts | Britannica
Volcano, vent in the crust of Earth or another planet or satellite, from which issue eruptions of molten rock, hot rock fragments, and hot gases The term volcano can also refer to the landform created by the accumulation of solidified lava and volcanic debris near the vent
- What is a 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 Beneath a volcano, liquid magma containing dissolved gases rises through cracks in the Earth’s crust As the magma rises, pressure decreases, allowing the
- About Volcanoes | U. S. Geological Survey - USGS. gov
Volcanoes are openings, or vents where lava, tephra (small rocks), and steam erupt onto the Earth's surface Volcanic eruptions can last days, months, or even years
- What Is a Volcano? | NASA Space Place – NASA Science for Kids
Volcanoes occur when material significantly warmer than its surroundings is erupted onto the surface of a planet or moon from its interior On Earth, the erupted material can be liquid rock ("lava" when it's on the surface, "magma" when it's underground), ash, cinders, and or gas
- Volcanoes - National Geographic Society
A volcano is an opening in a planet or moon’s crust through which molten rock and gases trapped under the surface erupt, often forming a hill or mountain
- Volcano facts and information | National Geographic
Volcanoes are Earth’s geologic architects They’ve created more than 80 percent of our planet’s surface, laying the foundation that has allowed life to thrive Their explosive force crafts
- Explore volcanoes - BBC Bitesize
Volcanoes can look like small mountains or hills A volcano is an opening in the Earth's crust that allows magma, hot ash and gases to escape What types of volcano are there? There are two
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