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Volcano - Wikipedia

en.wikipedia.org/wiki/Volcano

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava ... Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption. ...

What causes a volcano to erupt and how do scientists predict ...

www.scientificamerican.com/article/what-causes-a-volcano-to/

When a part of the earth's upper mantle or lower crust melts, magma forms. A volcano is essentially an opening or a vent through which this magma and the ...

What Causes A Volcanic Eruption? | IFLScience

www.iflscience.com/environment/are-explosive-volcanic-eruptions-triggered-frictional-heating/

Jan 6, 2016 ... A team of volcanologists led by the University of Liverpool have released a perhaps controversial Nature study on the causes of volcanic ...

What causes Volcanoes? - Geoscience Australia

www.ga.gov.au/scientific-topics/hazards/volcano/basics/causes

Understanding how volcanoes work and how their eruptions can be predicted is essential for the well-being and ...

Why are there volcanoes? Why do they erupt? | Volcano World ...

volcano.oregonstate.edu/why-are-there-volcanoes

Volcanoes erupt because of density and pressure. The lower density of the magma relative to the surrounding rocks causes it to rise (like air bubbles in syrup).

What Causes Volcanoes? Why do Volcanoes Erupt? - WorldAtlas.com

www.worldatlas.com/articles/what-causes-volcanoes-why-do-volcanoes-erupt-where-are-volcanoes-found.html

Sep 19, 2016 ... A volcano is a geological feature of the earth where an opening allows magma to escape from the mantle of the planet.

Why Iceland's Eyjafjallajökull Volcano Erupted - Live Science

www.livescience.com/8993-iceland-eyjafjallajokull-volcano-erupted.html

Nov 17, 2010 ... A peek into the roots of the eruption of the Eyjafjallajökull volcano in ... The cause of Eyjafjallajökull's explosive eruption seemed to be the ...

www.ask.com/youtube?q=What Causes A Volcano Eruption&v=ShOFQ2h2fws
Jun 19, 2014 ... Volcanoes form when magma from the earth's interior is able to make its way to the surface, via a vent. This is usually associated with plate ...

Facts about Volcanoes for Kids - Primary Homework Help

www.primaryhomeworkhelp.co.uk/mountains/volcanoes.htm

A volcano is a landform (usually a mountain) where molten rock erupts through ... The inner layer is called the core. volcano What causes volcanoes to erupt?

What causes volcanoes to erupt? on Vimeo

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This is "What causes volcanoes to erupt?" by lfgrancanaria on Vimeo, the home for high quality videos and the people who love them.

Answer
Several factors trigger volcanic eruptions, including the buoyancy of magma, a build-up of pressure from the gases in the magma and an injection of new magma into a full magma chamber.
When a part of the earth's upper mantle or lower crust melts, magma forms. A volcano is essentially an opening or a vent through which this magma and the dissolved gases it contains are discharged.
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What causes volcanic eruptions? | Reference.com

www.reference.com

Volcanic eruptions occur when magma builds up beneath the Earth's crust and forces its way to the surface. Natural vents in the crust allow magma passage to ...

Volcanoes and volcanic eruptions - BBC

www.bbc.co.uk

Volcanoes form when magma reaches the Earth's surface, causing eruptions of lava and ash. They occur at destructive (compressional) and constructive ...

What causes a volcano erupt?

www.vtaide.com

A volcano begins as melted rock (magma) which rises from deep inside the earth toward the surface. As the gas-filled magma rises ...