1. Unit 4 THE EARTH

2. The Earth Contains 3 Spheres 1. Hydrosphere - the liquid layer of Earth which covers about 75 % of the planet; includes oceans, lakes, and rivers

3. The Earth Contains 3 Spheres 2. Atmosphere - the gas layer of the Earth made up of 78% nitrogen, 21% oxygen, and 1% other gases

4. The Earth Contains 3 Spheres 3. Lithosphere - the solid layer of Earth which includes the upper mantle and crust

5. THE EARTH HAS LAYERS

6. CRUST

7. THE EARTH HAS LAYERS MANTLE

8. THE EARTH HAS LAYERS OUTER CORE

9. THE EARTH HAS LAYERS INNER CORE

10. Let’s Fill Out The Chart Layer & Thickness TextureTemperatures Celsius Composition Crust 5- 40 km thick Solid Thin Least Dense 18 - 870 Aluminum Oxygen Silicon

11. Let’s Fill Out The Chart Layer & Thickness TextureTemperaturesComposition Upper Mantle 2300 km thick Thick Molten Liquid 1000- 2500 Iron Magnesium

12. Let’s Fill Out The Chart Layer & Thickness TextureTemperaturesComposition Lower Mantle 2300 km thick Solid 2500 - 5000 Aluminum Silicon Oxygen

13. Let’s Fill Out The Chart Layer & Thickness TextureTemperaturesComposition Outer Core 2300 km thick Liquid 4400 - 6100 Iron Nickel

14. Let’s Fill Out The Chart Layer & Thickness TextureTemperaturesComposition Inner Core 1220 km thick Solid 6100 +Iron Nickel

15. As you travel toward the center Temperature Increases Pressure Increases

16. Do Now3/1/12 Name the 5 layers of the earth in order from the outermost layer to the innermost layer.