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Describe the layers of the interior of the earth and their chemical composition 

Asked by aamanijain2005 18th April 2019, 3:36 PM
Answered by Expert


  • The crust is the uppermost layer found on the surface of the Earth.
  • It is the thinnest of all the layers and is about 35 km on the continental masses and only about 5 km on the ocean floor.
  • Two main mineral constituents of the continental mass are silica and alumina. Therefore, continental crust is also called sial.
  • The oceanic crust consists mainly of silica and alumina. Therefore, it is known as sima.



  • This layer of the Earth lies underneath the crust.
  • It extends up to a depth of 2,900 km below the Earth’s crust.



  • It is innermost layer of the Earth with a radius of about 3500 km.
  • It is called nife as it is made up of nickel and iron (ni-nickle; fe-ferrous or iron).
  • There is very high temperature and pressure inside the Earth’s core.
Answered by Expert 19th April 2019, 8:45 AM
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