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How do volcanoes erupt on the Earth's surface?

Updated: 8/20/2019
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10y ago

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A rising plume of liquid rock (also known as magma) can reach the surface from the underlying mantle. There are also volcanoes which explode due to the pressure of water vapor, when porous rocks contain water, and these rocks are heated by magma. Those are called boiler volcanoes.

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Q: How do volcanoes erupt on the Earth's surface?
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Related questions

What causes volcanoes to erupt under earths surface?

mostly earthquakes or plate tectonic movement.


How do volcanoes takes place?

Volcanoes are essentially holes in the earths surface through which magma and lava can erupt. when pressure builds up below the earths crust, magma is then forced violently out of the volcanoes.


Where are most of earths volcanoes hidden?

They are mostly hidden underwater because nothing has yet made them erupt and come to the surface.


What is the name for magma that has erupted?

Lava. Note: Magma cant erupt, volcanoes do. Magma is just the word for molten rock beneath the earths surface, lava is for molten rock above the earths surface.


How do volcanoes form a hole at the top?

When Volcanoes erupt the surface is melted by the lava


Do volcanoes erupt in places where two of the earths plates meet?

yes sometimes


What can erupt to bring a lava flow to earths surface?

magma


What geological events occur because of covection currents in earths mantle?

hgbn


Why do so many of earths volcanoes occur along plate boundries?

Volcanoes occur near plate boudaries because volcanoes need water to erupt.


Do volcanoes erupt when earths plates move?

Well, when earths plates move away from each other that's when it happens but move well then NO!


What are facts about strato volcanoes?

Did you know that composite volcanoes make up 60% of the Earths volcanoes. Composite volcanoes don't always have to erupt from the top. They can have many magma chambers and can erupt from the sides. They can be made of basalt, rhyolite and/or andesite. They erupt both ash and lava. The lava is very thick. When the time comes for the volcano to erupt they start to become very quiet. (Sneaky eh?)


How do diamonds get to the surface?

Via rising molten magma or by mining.