1. The Earth and it’s layers
and plate tectonics

2. Inner Core
- solid, hot Nickel & Iron minerals

3. Outer Core
Very hot liquid Nickel and Iron.
Scientists think that circulation in the outer core creates the earth’s magnetic field.

4. Mantle Surrounds the core Contains the semi-solid magma
Tectonic plate movement

5. Lithosphere Rigid outer covering VERY thin
Contains the crust (continental and oceanic) and uppermost of the mantle

6. Alfred Wegener suggested that all land was once together
Continental Drift
Alfred Wegener suggested that all land was once together

7. Continental Drift
He found evidence from mountain ranges, fossils and rock layers to support his theory

8. Called his super-continent Pangaea (meaning all lands in Greek)
Continental Drift
Called his super-continent Pangaea (meaning all lands in Greek)
Could NOT explain HOW things moved

9. Theory of Plate Tectonics
Earth’s surface is divided into plates

10. Theory of Plate Tectonics
Plates contain BOTH ocean and continent

11. Theory of Plate Tectonics
The plates are CONSTANTLY moving (causing earthquakes and volcanoes)