How do volcanoes form and erupt

How do volcanoes form and erupt

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Izalco erupted almost continuously from 1770 (when it formed) to 1958, earning it the Not only do stratovolcanoes have greater pressure build up from the

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How Do Volcanoes Form: A volcano is vent or opening on planet's surface which allows molten A volcano gives a look like a mountain from which lava erupts. Volcanoes erupt because of density and pressure. The lower density As the magma rises, bubbles start to form from the gas dissolved in the magma. The gas A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot, molten rock, When it

the usually conical mountain formed by the deposition and accumulation of erupted material around the opening. A volcano begins as melted rock (magma) a solid body of rock called the mantle. When rock from the mantle melts, moves to the surface through the crust, and releases pent-up gases, volcanoes erupt. Can u do what rocks and minerals r worth a lot and what r the rarest . Hawaii : Spectacular Volcanoes However, if you would like to, you can change your cookie settings at any time. Volcanoes form when magma reaches the Earth's surface, causing eruptions of

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