Volcanoes

At least 1,500 active outletes dot the globe, and some of them go been regularly flip ones wiging for years. They variant when molten rock called magma, breaks through and through and through a weak atomic number 18a of mankinds surface. The put up that tone down magma provoke quietly flow cloak-and-dagger for hundreds of years, and then erupt with great fury. I will be explaining more of the grandness of vent-holees, and some of the different chacteristics they have. Volcanoes are holes or vents in the dry lands crust, created when molten, hot magma, under(a) the crust of the Earth is cast upward to the surface. First, magma collects in a pocket beneath the crust, draw builds up and forces it up through cracks to the surface, and hot mess upes try to bilk but are trap in the magma. Next, the surface of the Earth begins to bulge until the squash can no longer be contained. Finally, botchses and fragments are released in a violent explosion call ed a volcanic eruption. A volcano can erupt many another(prenominal) times in its lifetime. The material released over many eruptions piecemeal builds up a cone shaped mountain. First, in the spunk of the mountain is a vent called the substitution vent; at that place can be smaller side vents that come attain of the central vent.

Next, in that location is a bowl shaped volcanic crater at the top of the central vent and under the volcano in that location is a large magma chamber where the magma is. The explosive force of a volcano depends on how much gas is rebound in the magma. When the re is a lot of gas confine in the magma the! eruptions are more explosive, and when there is less gas the eruptions are less explosive. Magma flows out of the volcano in the bring of lava. The lava exiting from an erupting volcano settles on the sides of the volcanic mountain and cools forming a toilsome crust. If there were more pressure the magma would be shot into the air, and if there were less pressure it would just flow out of the top. Depending on how much lava and magma build up different types of volcanoes can be formed....If you want to get a full essay, order it on our website: OrderCustomPaper.com

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