Internal Structure of the Earth

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Internal Structure of the Earth
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Internal Structure (cont.)

• Crust the outer, hardest layer of the
  lithosphere continental crust (mostly granite,
  2.7 g/cm³, 0-40 km) and oceanic crust (basalt 3.0
  g/cm³, 0-10km)
• Lithosphere crust and upper most, solid, rigid
  portion of the mantle broken into pieces (0-100
  km)

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Internal Structure (cont.)

• Asthenosphere partially molten rock in the
  upper mantle plastic consistency (100-700km)
• Mohorovic Discontinuity (Moho) the boundary
  between the Earths crust and the upper mantle --
  averaging 8 kilometers
• (5 miles) in depth under the oceans and 32
  kilometers (20 miles) in depth under the
  continents

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Internal Structure (cont.)

• Mantle molten rock that has a much stiffer
  consistency than the asthenosphere solid yet
  behaves like a liquid similar to a glacier (3.3
  5.5 g/cm³, 700- 2900km)
• Outer Core liquid iron and nickel (9.9 12.1
  g/cm³, 2900 to 4980km)
• Inner Core solid, iron and nickel (12.7-13.0
  g/cm³, 4980 to 6370km)

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• http//earth.unh.edu/esci402/docs/Earth20Interior
  .jpg

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Internal Structure (cont.)what some scientists
think is going on
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Internal Structure (cont.)
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The End
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Extra - Extra

• Come to me after school and sing
• The first verse of the Hokey Pokey and get a PRIZE