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Inside the earth

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Inside the earth

  1. 1. Inside the Earth
  2. 2. Composition (What it is made of)• Crust• Mantle• Core
  3. 3. The Crust• Outer layer• 5-100 km thick• 2 types of crust– Oceanic (very dense,made of basalt)– Continental (lessdense, made ofgranite)
  4. 4. Oceanic and Continental Crust
  5. 5. The Mantle• Middle layer• Very thick layer
  6. 6. The Core• Made mostly of iron• 1/3 of the earth’s mass• Very hot
  7. 7. Earth’s Layers• How are the earth’slayers similar to anegg?• Shell=crust• Egg white=mantle• Yolk=core
  8. 8. Physical Structure of the Earth(5 Layers)• Lithosphere- rigid outer layer (crust)• Asthenosphere- solid rock that flowsslowly (like hot asphalt)• Mesosphere- middle layer• Outer Core- liquid layer• Inner Core- solid, very dense
  9. 9. Tectonic Plates• Earth’s crust is broken into about 19pieces• These plates move on top of theasthenosphere
  10. 10. Tectonic Plates• Earth’s crust is broken into about 19pieces• These plates move on top of theasthenosphere

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