Earth Surface

hide step up1 RUNNING HEAD: Earth keep abreast Lisa Coleman Earth Surface August 8, 2011 Introduction to Physical cognition Professor Olivia D. Uitto, Ph.D., J.D. Earth Surface2 1. What ar the layers of the cosmos called? The layers of the earth are known as the crust, the outer core, the interior(a) core, and the mantle. The crust is the outermost layer which consists of slightly 10 miles of rocks. There are 2 types of crust, one(a) is set(p) drinkstairs the oceans and the other makes up the continents. The crust that is located on a lower floor the oceans is thinner than the one that makes up the continents also seismic waves come across through and through the oceanic crust sudden than they do through the continental crust. (Tillery, 2009) The coterminous layer is the mantle. This is the middle part of the earth. It makes up almost 85% of the weight and smoke of the earth and is round 1800 miles deep. The outer core is the next layer . It is about 3,000 miles beneath the earths surface and is made up of liquid resolve lava that consists of mainly iron and nickel. And lastly the inner core is the next layer. It is about 900 miles inward that is going toward the meaning of the earth. This layer is say to be a solid world of iron and nickel. (author, 1998) 2. What is subduction?

Subduction is when one lithospheric ordered series is forced down below another dental plate into the mantle when the plates are woful toward each other. The plate that is thicker moves underneath the less thick plate. This serve well makes rocks break an d move along the fractures and is known as f! aulting. The plate that is subducted moves in a jolt motion and this causes earthquakes. The place where this happens is called the subduction zone. This also forms an oceanic trench which is a deep, narrow dip in the earth. 3. What is likely the cause of melt down of mantle fabric along convergent margins? Earth Surface3 When the subducted slab move down to almost 100km water and other precarious materials are driven off, the water...If you exigency to get a entire essay, order it on our website: BestEssayCheap.com

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