1. Inside the Earth

2. Composition (What it is made of) Crust Mantle Core

3. The Crust Outer layer 5-100 km thick 2 types of crust –O–Oceanic (very dense, made of basalt) –C–Continental (less dense, made of granite)

4. Oceanic and Continental Crust

5. The Mantle Middle layer Very thick layer

6. The Core Made mostly of iron 1/3 of the earth’s mass Very hot

7. Earth’s Layers How are the earth’s layers similar to an egg? Shell=crust Egg white=mantle Yolk=core

8. Physical Structure of the Earth (5 Layers) Lithosphere- rigid outer layer (crust) Asthenosphere- solid rock that flows slowly (like hot asphalt) Mesosphere- middle layer Outer Core- liquid layer Inner Core- solid, very dense

9. Tectonic Plates Earth’s crust is broken into about 19 pieces These plates move on top of the asthenosphere

10. Assignment Write a paragraph (minimum 5 sentences) about what you learned. –Remember to include the important facts, use proper punctuation, and make sure it makes sense!

11. Vocabulary Crust Mantle Core Lithosphere Asthenosphere Mesosphere Tectonic plate Continental drift Sea floor spreading