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Volcano

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 ... Large eruptions can affect temperature as ash and droplets of sulfuric acid obscure the .... L...

USGS FAQs - Volcanoes General - How Do Volcanoes Erupt?

www2.usgs.gov/faq/categories/9819/2729

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 ...

How Volcanoes Erupt - Universe Today

www.universetoday.com/31124/how-volcanoes-erupt/

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?

Explainer: Why volcanoes erupt - ABC News (Australian ...

www.abc.net.au/news/2015-08-06/volcanoes-explainer-why-they-erupt/6676400

Aug 5, 2015 ... Some people believe volcanic eruptions are caused by fate. ... But if the pathway does not exist, then magma will force itself to an area that has ...

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

www.nytimes.com/video/science/100000003431211/how-it-happens-volcanic-eruptions.html

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. Henry Fountain  ...

www.ask.com/youtube?q=How Do Volcano Erupt&v=Qq7u1lw7038
Feb 25, 2009 ... United States Geological Survey podcast that answers the question, "How to volcanoes erupt?" NOTE: In no way does USGS endorse this ...
www.ask.com/youtube?q=How Do Volcano Erupt&v=-kQwudeT3ww
Jun 29, 2013 ... A quick and fun cartoon lesson about volcanoes. ... i have an asignment and its due tomorrow. thanks to you it took half an hour less to do!! :^).

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

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

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 ...

What causes a volcano erupt?

www.vtaide.com/png/George/volcanoes.htm

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

Volcanic Eruptions | Scholastic.com

www.scholastic.com/teachers/article/volcanic-eruptions

How long does it take for a volcano to cool? How many volcanoes erupt every day? Expert volcanologist Dr. Stanley Williams answers students' questions.

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

volcano.oregonstate.edu

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).

Volcanoes - Weather Wiz Kids weather information for kids

www.weatherwizkids.com

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  ...

Why do volcanoes erupt? What creates eruptions? - eSchooltoday

eschooltoday.com

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 ...