Monday, February 06, 2017

Structure of Earth

Structure of Earth


Structure of earth

Interior is divided into: 

  1. Crust
  2. Mantle
  3. Core
 
  1. Crust  

    • Uppermost part
    •  Solid
    • Thickness extend from 5 to 40 km inside earth
    • Consist of rock line Granite, basalt etc.
    • Density 2.5 - 3 gm/cc. 
  1. Mantle

    • Below crust is mantle divide into outer and inner part.
    • Outer part extends up to 660 km.
    • Inner part extends up to 2900 km. 
    • Density 3.38-5.56 gm/cc.
    • Semi - Solid state.
    • Temperature is around 3000 0
mantle is further divided into three parts


       3. Core

      • It have two parts Inner core and Outer core.
      • Inner core is solid  and composition consist of Nickel and Iron.
      • Outer Core is Liquid zone.
      • Radius of Inner core - 1290 km.
      • Outer core thickness -2300 km.
      • Density around 13.5 gm/cc contrast to 25  0C
      • outer core
      • Temperature is estimated around 2500 0

      inner core