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Groundwater that comes in contact with magma or rocks heated by magma can boil into steam. If it boils quickly enough it can result in an explosion called a phreatic eruption.

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Q: What does underground water do to a volcano?
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Related questions

How are volcanoes and geysers related?

A geyser is an underground volcano with water on the surface of it. This water is then boiled by the magma.


Why does a geyser shoot steam into the air?

Water is heated by an underground volcano and boils.


What is another word for underground volcano?

subterranean


What are things that are ejected from a volcano.?

The matter thrown out of a volcano while it is erupting is called lava, and it consists of melted rock matter. Before erupting, the lava moves underground towards the opening of the volcano. When it is underground like this, it is called magma.


What comes out of volcano when it erupts?

Lava, which is melted solids from the underground


How are fumaroles different from hot springs?

A fumarole is a vent on or near a volcano that emits gas. A hot spring is a pool of water heated by an underground source.


Is underground water called as fresh water?

Underground water is called underground water, because it is "underground" not because it is fresh or salt. You can have underground salt water reservoirs just like you can have fresh water ones.


Is underground water called fresh water?

Underground water is called underground water, because it is "underground" not because it is fresh or salt. You can have underground salt water reservoirs just like you can have fresh water ones.


Where is the mine on Astro Knights Island?

No mines. But there is an underground chamber in Arturus. And the volcano passages are underground. (see related questions)


Why did the Iclandic volcano erupt?

The underground pressure inside of the volcano built up and finally exploded. It was looking for a pathway with the least resistance and the volcano's central lava tube was it.


Is water well for underground water or surface water?

Underground water is cleaner.


How did the Misti volcano form in Peru?

It could have been an underground volcano and then a rift formed and it erupted and rose above sea level.