Why is the Earth separated into layers?

Answer

The earth is separated into layers due to the mechanical properties composition. The earth is said to have outer silicate solid crust followed by a viscous mantle inner core, outer core and upper mantle which divides it in to layers.
Q&A Related to "Why is the Earth separated into layers?"
i really dont know!
http://wiki.answers.com/Q/Why+did+the+Edrth+sepera...
The Earth is separated into layers based on mechanical properties in
http://www.chacha.com/question/why-did-the-earth-s...
I'm guessing you mean Crust, mantle, core? Well the reason is due to a process called differentiation. When the young Earth was mostly molten the more dense materials (mostly iron
http://answers.yahoo.com/question/index?qid=200911...
The Thermosphere is located between mesosphere and exosphere and it is the layer with the highest temperature. The temperatures, at upper level of thermosphere, are higher then +3000
http://www.enotes.com/homework-help/which-layer-ea...
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