Se Sea Floor Spreading Research Paper

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Tectonic Plates are what cause many of earths natural disasters. These can come in forms such as volcanoes, earthquakes and tsunamis. The earthquake of San Francisco was one of the most devastating earthquakes in the earths history and had ended in tragedy (Quinton et al, 2012, p189). These tectonic plates also resulted in the change of earths continents. More than 200 million years ago, all of Earth’s continents were combined into one super continent called Pangea. This continent slowly separated into 7 others we know of today (Quinton et al, 2012, p176). There are many known theories to why the Earth’s continents have changed overtime, such as the Continental Drift and Seafloor Spreading theories. These two theories help to explain the worlds creation, one of the most unknown mysteries of today. …show more content…

This theory was created by Harry Hess, a geologist that worked with the military studying the seafloor, in 1960. To back up his theory, he has discovered evidence of a Mid-Atlantic range found deep within the ocean (Quinton et al, 2012, p77). Sea Floor Spreading is a process that occurs at mid ocean ridges, where a new oceanic crust is formed and is pushed away from the ridge, it is a geological process in which the lithosphere split apart from each other (NationalGeographic, 1996). The Mid-Ocean ridge is a continuous chain of volcanoes where lava erupts, creating the crust of the earth (divediscover, 2005). The hot magma that rises up through the mid ocean ridge forms a new oceanic crust, where it is pushed away, therefore, explaining how the continents have moved overtime otherwise known as the continental drift theory, another well known theory that scientists and geologists use to explain how the Earth’s continents have changed overtime (Socratic,

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