1. Do Now What do convection currents do?
Explain in your own words how convection currents work. (Hint: think about Ms. Simmons’ cool lava lamp that she had in high school that made her so AWESOME!)
What are the Earth’s 2 major layers?
What are the 7 major plates?
If plates are moving together its called a _______ boundary.
If plates are moving away from each other it’s called a ________ boundary.
Give a real life example of a transform boundary.
Give a real life example of a convergent boundary.

2. Types of Convergent Boundaries
Plate Tectonics – Part 2
Types of Convergent Boundaries
PLATE COLLISIONS!!!!

3. Oceanic – Continental Convergence
1. Collision!!!
2. Continental Crust is less dense so Oceanic crust sinks (subducts) into the asthenosphere.

4. Oceanic – Continental Convergence
3. Subducting Ocean Plate creates a V-shaped Trench.
4. Oceanic Plate reaches the asthenosphere and melts.

5. Oceanic – Continental Convergence
5. The melted magma begins to rise through the mantle and crust.
6. It will rise to make a volcanic eruption.
7. Lava cools forming a continental volcanic arc.

6. Oceanic – Continental Convergence Animation

7. Oceanic – Continental Examples
Cascades Mountain Range (Mt. St. Helens)
Andes Volcanic Mountains (South America)

8. Oceanic – Oceanic Boundary
1. Collision!!!
2. The more dense ocean plate (older) subducts into the asthenosphere.

9. Oceanic – Oceanic Boundary
3. Oceanic crust melts into magma.
4. Magma becomes buoyant and rises.
5. This eventually forms volcanic islands in the water.

10. Oceanic – Oceanic Boundary Animation

11. Example of Oceanic-Oceanic Boundaries
ALUETIAN ISLANDS

12. Example of Oceanic-Oceanic Boundaries
Northern Mariana Islands

13. Continental – Continental Boundary
1. Collision!!!
2. Neither plate subducts because they are both low in density.

14. Continental – Continental Boundary
3. Crust is compressed and deformed, forced upward forming a mountain range.

15. Continental – Continental Boundary Animation

16. Example: Continental- Continental Convergence
Mt. Everest! (Himalayan Mts.)

17. Check Out More Cool Animations