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Sunday, February 3, 2019

The Earth Essay -- essays research papers

Did u know that our planet, man wasnt always mentation of as a planet? Until the sixteenth century when Capernicus figured knocked out(p) that the demesne was another planet, which revolved around the sun, Greek astronomers thought the Earth was the center of the solar system. Also Earth is the just now planet that its squall didnt come from Greek/Roman mythology.      When earth was first discovered, astronomers were only able to study it with out spacecraft. It was not until the twentieth century that we had maps of the absolute planet. Pictures taken of the planet are very important, not only because they care in weather predictions, but they are also very beautiful.     The Earth is divided into seven layers the crust, upper mantle, transition region, lower mantle, D layer, out subject matter, and inner outcome. The crust varies considerably in thickness it is thinner on a lower floor the oceans, and thicker under the continent s. (Arnett1) The inner core and crust are solid, and the outer core and mantel layers are plastic or semi-fluid. Most of Earths mass is in its mantle and the rest is in its core.     Most of the core is made of iron, but there may be lighter elements in it too. Temperatures at the center of the core can be as proud as 7500K, which is hotter than the surface of the sun.     Unlike the other rocky planets, Earths crust is divided into several separate plates, which float around inde...

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