2. What is Plate Tectonics
The Earth’s crust and upper mantle are broken into sections called plates
Plates move around on top of the mantle like rafts

4. What is the Asthenoshere?
The plastic layer below the lithosphere = asthenosphere
The plates of the lithosphere float on the asthenosphere

5. Continental Drift
Theory that continents have moved slowly to their current locations.
At one point continents created a super-continent called PANGEA

6. Evidence of Pangea

8. 2 Types of Plates
Ocean plates - plates below the oceans
Continental plates - plates below the continents

9. Causes of Plate Tectonics

10. Convection Currents
Hot magma in the Earth moves toward the surface, cools, then sinks again.
Creates convection currents beneath the plates that cause the plates to move.

12. Questions... What causes plates to move?
How is a convection current formed?

13. Sea Floor Spreading
Mid Ocean Ridges – underwater mountain chains that run through the Earth’s Basins
Magma rises to the surface and solidifies and new crust forms
Older Crust is pushed
farther away from the ridge

14. Sea Floor Spreading

15. Pangea activity

16. Ticket out the door
Why would you expect to see similar rocks and rock structure on two landmasses that were connected at one time? Answer using ARE. Minimum of 5 sentences
Assertion- restate without using yes or no
Reasoning- Broad statement
Examples/Evidence- specific statements