The Earths Structure Mind Map

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  • Created by: broog
  • Created on: 07-04-15 09:21
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  • The Earths Structure and Convection Currents
    • Lithosphere
      • Crust and Upper Mantle
      • 80-90 km thick
      • Divided into 7 very larger plates
        • and a number of smaller ones
    • Asthenosphere
      • semi molten
      • The plates float and move on this
    • Mohorovijic Discontinuity
      • Separates the Lithosphere from the Asthenosphere
      • on average 7 km below the Ocean floor
    • Crust
      • Elements present
        • Silicon
        • Oxygen
        • Aluminium
        • Potassium
        • Sodium
      • Varies in thickness
        • Beneath Ocean only 6-10 km thick
        • Beneath continents it is 30-40 km thick
        • Below mountains it is up to 70 km thick
    • Mantle
      • made of semi molten and moltern rock
      • contains lighter elements e.g. silicon and Oxygen
    • The Core
      • made of dense rocks containing
        • Iron alloys
        • Nickle alloys
      • Molten Outer Core
      • Solid Inner Core

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