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Volcanos are openings on the Earth's surface where molten rock, debris and gasses are emitted from the Earth's interior.

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. One such hazard is that volcanic ash can be a  ...

www.sciencekids.co.nz/sciencefacts/earth/volcano.html

Volcanoes are openings in the Earth's surface. When they are active they can let ash, gas and hot magma escape in sometimes violent and spectacular ...

www.dosomething.org/us/facts/11-facts-about-volcanoes

A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. In an eruption ...

www.natgeokids.com/nz/discover/geography/physical-geography/volcano-facts

Check out these fascinating volcano facts with National Geographic Kids! What is a volcano? Why does it erupt? And where can you find the world's biggest?

www.livescience.com/31774-amazing-volcano-facts.html

Oct 2, 2012 ... Volcanoes erupt in many spectacular ways and have wreaked havoc on civilizations past and present; here are fascinating facts on some of the ...

www.nationalgeographic.com/environment/natural-disasters/volcanoes

Get more information about volcanoes from National Geographic.

www.livescience.com/27295-volcanoes.html

Feb 20, 2013 ... A volcano is an opening in Earth's crust where magma breaks through, raining down molten rock, ash and gases. There are several types of ...

www.universetoday.com/32185/10-interesting-facts-about-volcanoes

Oct 16, 2016 ... Want some volcano facts? Here are 10 interesting facts about volcanoes. Some of these facts you'll know, and others may surprise you.

.ask.com/youtube?q=Volcano+Facts&v=izqpsNN0eJY
Oct 17, 2016 ... Enjoy this fun filled science lesson for kids on volcanoes! Join Mr. DeMaio as he learns what causes a volcano to erupt, the difference between ...