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Earth Science: Earth’s interior

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Earth's layers from Friday 10/22/10 and Monday 10/25/10 notes.

Earth's layers from Friday 10/22/10 and Monday 10/25/10 notes.

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    Earth Science: Earth’s interior Earth Science: Earth’s interior Presentation Transcript

    • Earth’s Interior Ch 2, Lesson 3
    • Layers
      • Earth’s interior is made up of layers.
      • Each layer has a different composition, pressure, and temperature.
    • Seismic Waves
      • Scientist learned about the Earth’s layers using seismic waves from earthquakes.
      • Wave’s speed and direction change when going through different materials (solid rock, liquid rock, solid metal, liquid metal)
    • Crust
      • Thin, rocky, outer layer of Earth.
        • Two types:
          • Continental crust (continents or land)
          • Oceanic crust (under the ocean)
    •  
    • Lithosphere
      • The crust and the solid uppermost layer of the mantle.
    •  
    • Asthenosphere
      • Heated rock under the crust.
        • Rock is heated so much it acts like playdough.
    •  
    • Mantle
      • The thick middle layer of Earth
        • Composed of rock
    •  
    • The Outer Core
      • A layer of melted metal (iron and nickel)
      • Denser than the mantle
    •  
    • The Outer Core
      • Solid ball of iron.
      • Earth’s densest layer.
      • Temperature comparable to the surface of the sun!
    •