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Where Do Volcanoes Form And Why?

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Anonymous Profile
Anonymous answered
They are found in the oceanic crust of earth's asthenosphere, also they could be found in the deep part of the sea floor caused by subduction
Fun Shell Profile
Fun Shell answered
When plates subduct, the hot rock meets the cold water, making the hot rock melt at a lower temperature, this makes magma. Magma is then less dense than the surrounding rocks, so it rises, forming a volcano.
Or, when plates diverge, such as at a mid-ocean ridge, the magma rises and cuts through the volcanot, forming a volcano.
Plates subduct/converge or diverge at plate boundaries.
Also, volcanoes form at hot spots, when the narrow mantle plume rises towards the surface. Take Hawaii's Mauna Loa as an example. It is the biggest volcano on Earth, formed from the hot spot. Mauna Loa is also a shield volcano ( volcanoes that form at divergent boundaries/hot spots), just like the other volcanoes of Hawaii.
Hope this answers your question!
Kath Senior Profile
Kath Senior answered
The crust of the Earth isn't just one solid piece. It is formed from 12 to 15 large plates. These plates don't fit together perfectly. Where they meet they rub together and can buckle up to form mountain ranges. The plates are floating rafts on the layers of molten rock underneath and they move about all the time. They move slowly – no more than 2.5 cm or one inch per year. The crust is weak where plates meet.

These areas are often called fault lines. One example is the San Andreas fault line that runs through California. These regions experience a lot of earthquakes and volcanic eruptions compared with areas away from the fault line. When the plates move together, this causes earthquakes and can, over a long time, cause mountain ranges to be pushed up. Where the plates pull apart, the crust becomes quite weak and molten rock from the upper mantle can force its way out. This is a volcanic eruption.
Anonymous Profile
Anonymous answered
They form by the amount of pressure there is in the magma and they form around the ring of fire, hawaii, the us asia , and japan
Anonymous Profile
Anonymous answered
When ocean crust slides under a piece of Earth's crust, deep trenches appear. The ocean crust and mantle in the Earth's core melt, and that produce magma that makes its way to the surface. That will cause a volcano.
Anonymous Profile
Anonymous answered
Volcanoes form because deep within the earth it is so hot some rocks slowly melt and start flowing in the substance
Anonymous Profile
Anonymous answered
Volcanoes form because deep within the earth it is so hot some rocks slowly melt and start flowing in the substance
Anonymous Profile
Anonymous answered
I think that volcanoes form in the Pacfic because the plates.Are closer to the Pacific
Anonymous Profile
Anonymous answered
I don't know  where they form thats why I asked this question love your best friend

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