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Volcanoes are created from a opening in the Earth's crust, which allows hot magma, ash and gases to escape. They form in the shape of cones, domes or simple fissures.

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 .... Some volcanoes have rugged peaks formed by lava domes rather than a summit crater while other...

How do volcanoes form? - CSUN

www.csun.edu/~jao45194/volcano2.html

When a large body of magma has formed, it rises thorugh the denser rock layers toward Earth's surface. Magma that has reached the surface is called lava.

www.ask.com/youtube?q=How Are Volcanoes Formed&v=6Z4as_imJfM
Jun 22, 2011 ... Volcanoes, Their Formation, Impact, & Eruption - Interesting & Educational Videos ... All About Volcanoes: How They Form, Eruptions & More!

Volcanoes - Weather Wiz Kids weather information for kids

www.weatherwizkids.com/weather-volcano.htm

Volcano Click Here to learn more about volcanoes from USGS. How are volcanoes formed? Volcanoes are formed when magma from within the Earth's upper ...

How Do Volcanoes Form? - Family on Bikes

www.familyonbikes.org/educate/lessons/volcanoes.htm

Most volcanoes are formed by the movement of tectonic plates on the surface of the earth. These plates are basically huge pieces of rock that 'float' on the ...

How do volcanoes form? | Reference.com

www.reference.com/science/volcanoes-form-87ca6dc8b6e60e88

With vent formations, lava builds up over time, layering on top of itself, and eventually a mountainous formation develops. With subduction zone volcanoes, the ...

How are volcanoes formed? | Reference.com

www.reference.com/science/volcanoes-formed-c814f59900c20d86

Volcanoes are formed through the movement of magma and tectonic plates. Magma either pushes up through the middle of a lithosphere plate or around the  ...

Volcano Formation - Windows to the Universe

www.windows2universe.org/earth/interior/volcano_formation.html

Apr 29, 2016 ... Volcanoes form when hot material from below risesand leaks into the crust. This hot material, called magma, comes either from a melt of ...

How Do Volcanoes Form - Conserve Energy Future

www.conserve-energy-future.com/howvolcanoesform.php

Mid Atlantic Ridge is an example volcano formation where the tectonics plates are diverging or pulling apart whereas Pacific Ring of Fire is an example of ...