Wednesday
July 30, 2014

Homework Help: Structure of Earth

Posted by Anonymous on Tuesday, January 4, 2011 at 8:09pm.

Differences between Lithosphere and Asthenosphere. Im contrasting the two layers.

Lithosphere:
-rigid
-cool
-contains crust and upper part of mantle
-brittle
-doesn't flow
-divided into tectonic plates
-consists of heavier oceanic basalt
-consists of lighter continental rock
-has two parts--Oceanic lithosphere, made up of the oceanic crust. Continental lithosphere, made up of the continental crust.

Asthenosphere:
-lower part of the upper mantle
-behaves like plastic
-flows more easily than rest of the mantle
-behaves like viscous fluid/soft plastic
-solid mantle
-deeper and hotter
-rocks are under high pressure and are solid, but can slowly flow plastically



Similarties:
-Both interior of Earth
-Made of hot molten rock


Anything else I could add above? I have many points for the differences, not much for the similarites between the two layers.

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