- 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]
- 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
- 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
- VolcanoDiscovery: Volcanoes Worldwide - News, Info, Photos, and Tours . . .
Overview of our website: 1) Info about all active volcanoes in the world; 2) Volcano photos; 3) Earthquake information; 4) Tours and expeditions to active volcanoes, walking and study holidays in volcanic areas
- Volcanoes and Volcanic Eruptions - Facts and Information
Articles, facts, information and photos for volcanoes and volcanic activity | Geology com
- 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
- Volcanism - Understanding Global Change
Volcanic eruptions occur when molten lava reaches the surface of the Earth When lava cools at the surface it is called extrusive igneous rock Volcanism can both increase and decrease temperature Volcanism can cause long term increases in average temperatures by releasing greenhouse gases, but at a very slow rate over millions of years
- Volcanoes Volcanic Landforms - U. S. National Park Service
Volcanoes both build and destroy landscapes Eruptions of lava, ash, volcanic bombs, blocks, and cinders form new land on oceanic islands, and build towering and inspiring snow-covered peaks Volcanic eruptions are also destructive as they can blow apart those very same mountains
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