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

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Presentation transcript:

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?

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:

Internal Planetary Processes Plate boundaries

Internal Planetary Processes Plate boundaries

Internal Planetary Processes Most volcanoes occur along subduction zones

Hot Spots Hawaii’s Hot Spot: EJAKc EJAKc

Volcanic Activity 2011

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

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

Add Mt. St. Helens