layers of the earth

layers of the earth
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  • who an tell me the layers of the earth?
  • correct
  • ooh me they go lithosphere astthenosphere mesosphere outer core and inner core
  • the last two layers are the outer core and inner core the outer core is made of liquid iron and is 2200 km thick. the inner core is made of solid iron and nickle and is 1230 km thick. the outer core is the 4th layer down and the inner core is the center of the earth at the 5th layer.
  • underneath of that is the asthenosphere which is 250 km thick and  it is the second layer of the earth.
  • beneath that is the biggest layer the mesosphere it is 2550 km thick  and is made of slow moving solid rocks  and is the main part of the mantle.
  • if you look right here you can see the lithosphere which is 15-300 km thick and made up of the crust and upper rigid part of the mantle
  • the core is the center most part of the earth it is made of mostly iron and the outer part of it is liquid and the inner part is solid and is 3430 km thick.
  • the crust is the top layer of the earth and is made of mostly oxygen silicon and aluminium. the crust is 1000 km thick
  • the three composition layers of the earth are the crust, mantle, and core. 
  • the mantle is the middle layer it is 2550 km thick. it is more dence than the crust because it has more magnesium. the mantle is not as large as the core.
  • bye!!!
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