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What is the Great Shake Out?
https://www.youtube.com/watch?v=ijKGH3WKo3Q
THE DYNAMIC EARTH
http://www.youtube.com/watch?v=-z8zdoFLZME
http://www.youtube.com/watch?v=rn3oAvmZY8k
EARTHQUAKES
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
Earthquake Terms• FOCUS – actual location of where the
earthquake originates
• EPICENTER – Surface directly above focus
Types of Faults
Normal Fault Reverse Fault Strike-Slip Fault
FAULT - Fractures or cracks on earth’s surface that occur due to tectonic plate motion
Faults
• Normal fault– Found in areas
under tension• Where sections of the
landscape are pulling apart (divergent)
Called Fault Block Mountains
Faults (cont.)
• Reverse fault– Found in areas under
compression• Zones of convergence
Like the Himalaya Mountains
Faults (cont.)
• Strike-slip faults– More horizontal
movement than vertical movement
Like the San Andreas fault in California
http://www.youtube.com/watch?v=s6t6QYBmeWs