1. What is the Great Shake Out?

2. THE DYNAMIC EARTH

4. EARTHQUAKES

5. Earthquake
Release of energy when pressure and/or stress is built up between rocks
Usually occurs along faults and plate boundaries
Causes the area of rock to snap when energy is rapidly released in all directions along seismic waves

6. Earthquake Terms
FOCUS – actual location of where the earthquake originates
EPICENTER – Surface directly above focus

7. FAULT - Fractures or cracks on earth’s surface that occur due to tectonic plate motion
Types of Faults
Normal Fault
Reverse Fault
Strike-Slip Fault

8. Faults Normal fault Found in areas under tension
Where sections of the landscape are pulling apart (divergent)
These mountains are a result of the continental crust being subjected to tension as the crust pulls apart
Rock above the fault surface moves downward in relation to the rock below the fault surface.
Called Fault Block Mountains
Block moves downward

10. Faults (cont.) Reverse fault Found in areas under compression
Zones of convergence
Rocks above the fault surface are forced up and over the rocks below the fault surface
Like the Himalaya Mountains
Block moves upward

12. Faults (cont.) Strike-slip faults
More horizontal movement than vertical movement
Instead of moving up or down one another, the 2 rock surfaces slide past each other
These boundaries are usually twisted or strained because irregular surfaces catch on each other
Like the San Andreas fault in California