1. Inside the Earth Layers that Make Up the Earth

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

3. The Crust Outer layer 5-100 km thick Temp.- Surface temp to bottom 1600 F 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 Temp.- top 1600 F to bottom 4000 F

6. The Core Made mostly of iron as well as nickel 1/3 of the earth’s mass Outer core temp. top 4000 F to bottom 9000 F Inner core temp. above 9000 F Inner solid due to intense pressure

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