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How Volcanoes Work
How Volcanoes Work
Whenever there is a major volcanic eruption in the world, you'll see a slew of newspaper articles and nightly news stories covering the catastrophe, all stressing... More »
Source: www.howstuffworks.com



Large eruptions can affect temperature as ash and droplets of sulfuric acid .... eruptions, but their lava generally does not flow far from the originating vent.

www.ask.com/youtube?q=How Do Volcano Erupt?&v=-kQwudeT3ww
Jun 29, 2013 ... A quick and fun cartoon lesson about volcanoes. Great for teachers and students- hope ... USGS - How do volcanos erupt? - Duration: 3:13. by ...

How It Happens | Volcanic Eruptions - Video - NYTimes.com


Jan 5, 2015 ... The eruption of a volcano can be one of the planet's most destructive events — spewing huge amounts of rock, gas and ash that can kill people.

What makes a volcano erupt?


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

Why Do Volcanoes Erupt? | Science Articles | PlanetSEED


We know one reason why previously active volcanoes do not erupt: their vents and conduits become plugged with hardened lava. In stratovolcanoes, the plugs  ...

Why do volcanoes erupt? | Earth | EarthSky


Aug 20, 2015 ... Volcanoes are channels that transfer molten rock from Earth's crust to the surface. Here's why eruptions happen.

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


Nov 29, 1999 ... 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 ...

How do volcanoes erupt? - Ask.com


Volcanic eruptions can either be effusive or explosive. An effusive volcanic eruption occurs when the lava pours out onto the ground from the volcano's vent.

How does a volcano erupt? - Ask.com


A volcano erupts through the build-up and release of pressure, whether that pressure is of its underlying magma, water or both. This release can be explosive , ...

Helpful Resources

USGS FAQs - Volcanoes General - How Do Volcanoes Erupt?


Some volcanic eruptions are explosive and other are not. How explosive an eruption is depends on how runny or sticky the magma is. If magma is thin and ...

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


Volcanoes are just a natural way that the Earth and other planets have of cooling off and releasing internal heat and pressure. Volcanoes erupt because of ...

Why do volcanoes erupt? What creates eruptions? - eSchooltoday


Find out what the earth make-up is, and how extreme pressure build up inside the earth forces molten matter to be expelled out to the surface, causing a volcanic ...

How Volcanoes Erupt - Universe Today


May 20, 2009 ... Although volcanoes can look different, they're all created because of the same event; magma ... But what's going on, how do volcanoes erupt?

Volcanoes - Weather Wiz Kids weather information for kids


An extinct volcano is one which has erupted thousands of years ago and there's no possibility of eruption. Why do volcanoes erupt? The Earth's crust is made up  ...