The Earth

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  • Created by: Becca
  • Created on: 29-05-13 11:35
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  • The Earth
    • Core
      • Inner Core
        • Solid
      • Outer Core
        • Liquid
      • Nickel and iron
      • Radius of about 3500km
    • Mantle
      • Convection Currents
        • 1) Mantle gains energy from core.
        • 2) Mantle rises towards crust
        • 3) Mantle becomes cooler and starts to sink again
        • 4) This continues and moves the tectonic plates
      • Starts under crust and continues for 3000km
      • Behaves like solid but is able to flow
    • Crust
      • Tectonic Plates
        • Cracked pieces like a jigsaw
        • Causes
          • Earthquakes
          • Volcanoes
          • Ridges
        • Moving constantly
      • Average thickness
        • About 6km under oceans
        • About 35km under continents
    • Atmosphere
      • The Early Atmosphere
        • Water Vapour
          • Cooled and condensed to make oceans
        • Carbon Dioxide
          • Taken in by plants
          • Reacts with carbonates to make sedimentary rocks
        • Methane
          • Reacted with oxygen and taken in by plants
        • Ammonia
          • Reacted with oxygen to make nitrogen
        • Found out by the Miller-Urey Experiment
      • The Current Atmosphere
        • Oxygen
          • 19%
        • Nitrogen
          • 79%
        • Argon and other noble gases
          • 1%
        • Carbon Dioxide
          • 0.4%
  • Structure
  • Inner Core
    • Outer Core
      • Mantle
        • Crust
          • Atmosphere

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