Volcanoes : Volcanoes And Its Effects Essay

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Volcanoes A volcano is a rupture in the crust of a planetary-mass object that allows lava, volcanic ash, and gases to escape from a magma chamber below the surface. The Earth 's crust is made up of huge slabs called plates, which fit together like a jigsaw puzzle. The friction caused by the plates moving from time to time results in earthquakes and volcanic eruptions near the edges of the plates. There are many different types of volcanoes. The most common Cinder volcanoes. This type of volcanoes occurs when particles and blobs of congealed lava are emitted from a single vent in the center. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form an oval cone. A good example of a cinder cone is the Paricutin Volcano in Mexico that grew out of a corn field in 1943. The eruptions continued for 9 years and built the cone to a height of 424 meters. The other type of volcanoes are known as Composite volcanoes also known as Stratovolcano. They are steep-sided volcanoes composed of many layers of volcanic rocks, usually made from high-viscosity lava, ash and rock debris. Famous examples of composite cones are Mayon Volcano, Philippines, Mount Fuji in Japan, and Mount Rainier, Washington, U.S.A. Shield volcanoes are volcanoes shaped like a warrior’s shield in the middle with long gentle slopes made by basaltic lava flows. This is very fluid lava, usually from multiple vents or fractures,

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