- Volcano - Wikipedia
A volcano is commonly defined as 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]
- 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
- 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 A volcanic eruption is an awesome display of Earth’s power
- Which Volcanoes are Erupting? - List map of Active . . .
Volcanic Ash Advisory Centres Much current eruption news is provided by the 9 Volcanic Ash Advisory Centres (VAAC) distributed around the globe The VAACs provide a vital service for aviation safety
- Volcanoes - Education | National Geographic Society
National Geographic MapMaker: Significant Volcanic Eruptions 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
- 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
- What Causes Volcanic Eruptions? An In-Depth Guide
The nature of this eruption—whether it’s a slow lava ooze or a cataclysmic explosion—depends on the magma’s composition, temperature, gas content, and the structure of the volcanic vent Types of Eruptions: Fireworks from the Deep Volcanic eruptions are as varied as the volcanoes themselves Some are gentle, others are devastating
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