What Causes a Volcano?

Answer

A volcano is an opening in the surface of a planet or crust and it enables hot magma, gases and volcanic ash to escape from below the surface. They are caused by movements of tectonic plates towards or away from each other and in the process releasing magma from the earth's core.
Q&A Related to "What Causes a Volcano"
Volcanoes can be caused by mantle plumes. These so-called hotspots can occur far from plate boundaries. Hotspot volcanoes are also found elsewhere in the solar system, especially
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it killed 1278 people.
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A dormant one.
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Divergent Boundaries!
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3 Additional Answers
Ask.com Answer for: what causes a volcano
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.
A valcano is formed from the layers of the earth. A volcano has lava in it which comes out when the valcano erupts and can get as hot as 1600 degrees. You can find more information here: http://library.thinkquest.org/03oct/01186/causes.htm
Volcano is caused due to rapid spray of Lava from hole in crest. In the places where Earth's crest is thin, Lava comes as spray as it tries to become cold.
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