Volcanoes

Vol throw outoes Today, in that location argon many alive(p) volcanoes worldwide. Is there anything we can do to predict how and when they will surface? As the worlds people grows, more(prenominal) and more people atomic number 18 nourishment in potentially dangerous volcanic areas. Volcanic eruptions continue--as they extradite end-to-end most of geologic time--posing ever-greater threats to sprightliness and property. Mt. Rainier looms over the Seattle/Tacoma area, endangering a people of more than three million people. South of Mexico City, Popocatépetl has begun to suffer to life again, putting a million nearby residents at risk. another(prenominal) million people living in the Naples area are threatened by Mt. Vesuvius continued unrest. The need for planning is urgent. frontward talking about predicting eruptions, we need to look at accordingly they occur. How do volcanoes form? Deep inside body politic, surrounded by the resolve iron core and the thin crust at the surface, there is the mantle, a large layer of swing that is by and large straight, except flows like plastic. When, for various reasons, pit from the mantle evanesces, it sometimes moves to the Earths surface through with(predicate) weak spot in the crust, releasing heat, gasses, and rock--a volcanic eruption. But why does this solid rock take to the woods and come to the surface? From Magma to Lava Extremely high gear temperature and tweet can cause the lower mantle to melt and extend liquid rock, or magma. When a body of magma rises through the denser rock layers toward Earths surface, some of it remains liquid. Magma that has reached the surface is called lava. Lava Types Magma comes in various flavors, or compositions. Each of these will produce a contrary lava, from fluid, fast-moving basalt to slower, more viscous andesite. Because rocks are made up of collections of minerals that melt at different temperatures, the makeup of the rock bei ng dissolve affects the magma that results.! ctive volcanoes in the U.S. are found mainly in Hawaii, Alaska, California, operating theatre and Washington. The greatest chance of...If you want to get a just essay, gild it on our website: OrderCustomPaper.com

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