What Makes a Volcano Erupt?

Answer

When pressurized molten rock combines with heated gases, volcanoes erupt. The magma being less dense than the solid rock surrounding it produces eruption. You can find more information here: http://www.umich.edu/˜gs265/society/volcanoes.htm
Q&A Related to "What Makes a Volcano Erupt?"
a volcano erupts when the pressure in the ground comes to life l.
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A volcano can best be described as a fissure in the earth's crust. This fissure is filled with gases and molten lava (rock) The volcano is the opening through which these gases and
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the tetonic plates.
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the symptoms are burns homes lost death lives lost and so much more.
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1 Additional Answer
Ask.com Answer for: what makes a volcano erupt
Several factors trigger volcanic eruptions, including the buoyancy of magma, a build-up of pressure from the gases in the magma and an injection of new magma into a full magma chamber.
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 magma and the dissolved gases it contains are discharged.
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