Layers of the Earth It’s not just a big hallow ball! Created by Jon Moss http://www.edvantaged.com
Layers of the Earth If we cut it in half, it would have four different layers.
Layers of the Earth What is a good model of the earth?
Layers of the Earth But first, the layers of an egg! Shell Albumen Layer “ The White Part” Yolk
Layers of the Earth The Incredible  (But Not Quite)  Edible Egg! Solid Rock Melted Rock Melted Metal Solid Metal Crust Man...
Layers of the Earth The Incredible  (and absolutely inedible)  Earth Solid Rock Melted Rock Melted Metal Solid Metal Crust...
Show your stuff! The Snowball Effect! What layer is this? What layer is this? What layer is this? What layer is this? CRUS...
The Crust <ul><li>This is where we live! </li></ul><ul><li>The Earth’s crust is made of: </li></ul><ul><li>Continental Cru...
How do we know what the Earth is made of? <ul><li>Geophysical surveys: seismic, gravity, magnetics, electrical, geodesy </...
Using Seismic waves
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Layers Of The Earth

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Layers Of The Earth

  1. 1. Layers of the Earth It’s not just a big hallow ball! Created by Jon Moss http://www.edvantaged.com
  2. 2. Layers of the Earth If we cut it in half, it would have four different layers.
  3. 3. Layers of the Earth What is a good model of the earth?
  4. 4. Layers of the Earth But first, the layers of an egg! Shell Albumen Layer “ The White Part” Yolk
  5. 5. Layers of the Earth The Incredible (But Not Quite) Edible Egg! Solid Rock Melted Rock Melted Metal Solid Metal Crust Mantle Outer Core Inner Core
  6. 6. Layers of the Earth The Incredible (and absolutely inedible) Earth Solid Rock Melted Rock Melted Metal Solid Metal Crust Mantle Outer Core Inner Core
  7. 7. Show your stuff! The Snowball Effect! What layer is this? What layer is this? What layer is this? What layer is this? CRUST MANTLE OUTER CORE INNER CORE CRUST Made of SOLID ROCK MANTLE Made of MELTED ROCK OUTER CORE Made of MELTED METAL INNER CORE Made of SOLID METAL Why is it SOLID?
  8. 8. The Crust <ul><li>This is where we live! </li></ul><ul><li>The Earth’s crust is made of: </li></ul><ul><li>Continental Crust </li></ul><ul><li>thick (10-70km) - buoyant (less dense than oceanic crust) - mostly old </li></ul>Oceanic Crust - thin (~7 km) - dense (sinks under continental crust) - young
  9. 9. How do we know what the Earth is made of? <ul><li>Geophysical surveys: seismic, gravity, magnetics, electrical, geodesy </li></ul><ul><ul><li>Acquisition: land, air, sea and satellite </li></ul></ul><ul><ul><li>Geological surveys: fieldwork, boreholes, mines </li></ul></ul>
  10. 10. Using Seismic waves

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