Tips and Tricks on Internal Structure of the Earth and Rocks


 


1
Earth has a diameter of about 12756 km at equator & about 12715 km at the poles. The Earth's interior consists of rocks & metals & has 4 layers.



2
The Crust or the top layer of the earth is made of igneous rocks, metamorphic rocks & sedimentary rocks.



   3
Upper mantle consists of lithosphere & asthenosphere. Lithosphere is the hard rock layer of the mantle& the asthenosphere hemisphere is made of viscous yet solid rock.


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