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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.

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, volcanic ash, and gases to escape from a magma chamber ...

Volcano Facts, Volcano Information, Volcano Videos, Volcano ...

environment.nationalgeographic.com/environment/natural-disasters/volcano-profile/

Volcanoes are awesome manifestations of the fiery power contained deep within the Earth. These formations are essentially vents on the Earth's surface where ...

Volcanoes 101 - National Geographic

video.nationalgeographic.com/video/101-videos/volcanoes-101

Volcanoes are as dangerous as they are majestic. Over 50 eruptions rock our planet every year. This video helps you understand what causes volcanoes to form ...

Volcano Facts and Types of Volcanoes - Live Science

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 ...

Volcanoes - Weather Wiz Kids weather information for kids

www.weatherwizkids.com/weather-volcano.htm

Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits  ...

Volcano Hazards Program: USGS

volcanoes.usgs.gov/

Feb 27, 2016 ... Monitors volcanoes and collects scientific information on volcanoes in the United States and elsewhere to reduce the risk from volcanic activity.

Volcanoes | Ready.gov

www.ready.gov/volcanoes

Unlike most mountains, which are pushed up from below, volcanoes are vents through which molten rock escapes to the earth's surface. When pressure from ...

Volcano World | Your World is Erupting | Oregon State University

volcano.oregonstate.edu/

Brings modern and near real-time volcano information.

Volcanoes of the World - news, facts & information / VolcanoDiscovery

www.volcanodiscovery.com/volcanoes.html

Active volcanoes worldwide - short information / VolcanoDiscovery.