1. Earth’s Layers
The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed.
This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle.

2. The Crust Outermost layer 5 – 100 km thick
Made of Oxygen, Silicon, Aluminum

3. The Mantle Layer of Earth between the crust and the core
Contains most of the Earth’s mass
Has more magnesium and less aluminum and silicon than the crust
Is denser than the crust

4. The Core Below the mantle and to the center of the Earth
Believed to be mostly Iron, smaller amounts of Nickel, almost no Oxygen, Silicon, Aluminum, or Magnesium

5. Tectonic Plates

6. Plate Tectonics Greek – “tektonikos” of a builder
Pieces of the lithosphere that move around
Each plate has a name
Fit together like jigsaw puzzles
Float on top of mantle similar to ice cubes in a bowl of water

7. How Plates Move

8. Different Types of Boundaries

9. Divergent Boundary – Arabian and African Plates
Arabian Plate
Red Sea
African Plate

10. Divergent Boundary – Iceland

11. Divergent Boundary - Oceanic
LOOK AT THE SMARTBOARD

12. Divergent Boundary - Continental
LOOK AT THE SMARTBOARD

13. Convergent Boundary – Indian and Eurasian Plates
Indian Plate

14. Convergent Boundary – Oceanic & Continental
&

15. Convergent Boundary – Oceanic & Oceanic
Note – plates are reversed
&

16. Convergent Boundaries - Continental
&

17. Transform Boundary – San Andreas Fault

18. Review Name the 3 main layers of the Earth What is a tectonic plate?
Name the three different types of plate boundaries and one location on Earth for each one

19. Review Name the 3 main layers of the Earth What is a tectonic plate?
Crust, mantle, core
What is a tectonic plate?
Pieces of the lithosphere that move around
Name the three different types of plate boundaries and one location on Earth for each one
Divergent, Convergent & transform

20. What type of boundary is this?

21. What type of boundary is this?

22. What type of plate boundary is this?