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How Volcanoes Cause Damage Essay

1013 words - 5 pages

A volcano is an opening in the earth’s surface, which allows hot lava, volcanic ash, and other gases to escape through the crust of the earth. Volcanoes cause a lot of damage in many different places, for instance in Pompeii where Mount Vesuvius erupted. Mount Vesuvius is considered to be one of the most dangerous volcanoes in the world because in A.D. 79 it destroyed the whole city of Pompeii and killed about two thousand people. Pompeii was a town in the Roman Empire, located on the western coast of Italy. Many wealthy Romans had big homes there. At its height Pompeii had a population of about twenty thousand people. Pompeii happens to be a highly active volcanic area, and on August 24, A.D. 79 the city was turned into ruins by the eruption of Mount Vesuvius. Most people fled when the eruption started, but about two thousand people decided to stay and were buried in the eruption along with the city. The bulk of the material covering Pompeii was a small, lightweight pebbly material and some ash. Most people died from the toxic blast of poisonous gas. The eruption lasted for about a day, because of the eruption Pompeii was buried under about 25 feet of volcanic ash and lava.
Around the world there are many different types of volcanoes, but there are only three main types, Composite, Shield, and Dome volcanoes. A Composite volcano is also known as the Stratovolcano, this volcano is built by many eruptions that have happened throughout the course of history. Composite volcanoes are tall cone shaped mountains. These volcanoes erupt in different ways at different times. Shield volcanoes are the largest volcanoes on earth. These volcanoes are built almost entirely of lava. Shield volcanoes are produced by gas and heat from the earth’s core. The only way Shield volcanoes will erupt is if water somehow gets into the vent of the volcano, for example rain. Shield volcanoes are made by many thin layers of dryed up magma. These volcanoes occur along the mid oceanic ridge, where sea floor spreading is in progress. Dome volcanoes can be found in many different shapes and sizes; they are formed over time while magma starts to pile up and dry around the vent of the volcano. Most of the time the sides of a dome volcano is steep and is usually made of what’s called silica rich lava which contains pressurized gas so that explosions can occur. Dome volcanoes usually form around composite volcanoes after major eruptions and these types of volcanoes don’t erupt very often because they don’t have enough gas or pressure to make them erupt. For the most part, volcanoes come in different shapes and sizes; each and every volcanoe has its own unique and enjoyable design.
Most volcanoes on the earth’s surface are formed in very interesting and thrilling ways. Many volcanoes in the earth’s atmosphere are formed by the movement of techtonic...

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