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