Plate Tectonics Essay

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Science Plate Tectonic Theory Essay Plate Tectonics have always been a mysterious subject to discuss and scientists are looking for facts to prove their own theories. Indeed, scientists today have a better understanding of the Earth's tectonic plates, the driving forces and the cause of their movement, and the ways and connections in which they interact with one another. A tectonic plate is defined as a rigid segment of the Earth's lithosphere that travels independent of other plates surrounding it. There are seven major plates, North America, South America, Eurasia, Africa, Indo-Australian, Pacific and Antarctica as well as many smaller, microplates such as the Arabian Plate and Indian Plate. Plate tectonic theory began in 1915 and was first suggested by Alfred Wegener with his theory of continental drift. Wegener proposed that the continents moved through crust of ocean basins, which made them look like they fit together like a puzzle. Wegener was not the first one to notice that the edges of different plates are really similar and seem able to fit each other. Magellan and other early explorers also noticed this on their maps. Ortelius was the first to observe the geometrical coincidence between the coasts of America and Europe-Africa, and to propose continental drift as an explanation. "Torn away from Europe and Africa ... by earthquakes and floods" and went on to say: "The vestiges of the rupture reveal themselves, if someone brings forward a map of the world and considers carefully the coasts of the three [continents]." (USCG The Story of Plate Tectonic) However, Alfred Wegener was the first to realize that these continents which are separated now may once have been joined as a whole piece. In addition, recently, scientist... ... middle of paper ... ...large negative impact on the economy of Japan. Japan has lost considerable physical and human capital. Physical damage has been estimated and recorded to be from $195 billion to as much as $305 billion. 27,000 persons in Japan are killed or missing, and more than 202,000 homes and other buildings have been totally or partially destroyed or damaged. The negative effects of the earthquake and tsunami are being founded by the continuing crisis at the Fukushima nuclear reactors and the resulting radioactive contamination and shortages of electricity. The continuing aftershocks caused extensive damage to infrastructure, homes, manufacturing plants, and other buildings. In addition, the damage in the agricultural and marine resources were tremendously huge. Japanese not only lost the income from exporting and trading, but they also lost the ability to self sustain.
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