1. Earth’s Plate Boundaries Tectonic cycle: Involves creation and destruction of the solid outer layer of Earth, the lithosphere # of Plates? Active Areas? Speed of Movement?

2. Tectonic Cycle: Plate Boundaries 1. Divergent plate boundary: Plates moving apart New lithosphere is produced (seafloor spreading) 2. Convergent plate boundary: Plates Colliding Produces linear coastal mountain ranges or continental mountain ranges 3. Transform fault boundary: Plates sliding past one another San Andreas Fault in California Tectonics Explained: https://www.youtube.com/watch?v=0mWQs1_L3fA https://www.youtube.com/watch?v=0mWQs1_L3fA

3. Internal Planetary Processes Plate boundaries

4. Internal Planetary Processes Plate boundaries

5. Internal Planetary Processes Most volcanoes occur along subduction zones

6. Hot Spots Hawaii’s Hot Spot: https://www.youtube.com/watch?v=bYv6V5 EJAKc https://www.youtube.com/watch?v=bYv6V5 EJAKc

7. Volcanic Activity 2011

8. Volcanoes Some occur along spreading zones Few, such as Hawaiian Islands, not associated with plates.

9. Earthquakes Caused by release of built up stress, typically along faults. Plate movement releases seismic waves Side effects include: 1.Landslides 2.Tsunamis 3. After Shocks

10. Add Mt. St. Helens