MLEG2.4

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Outline
Devices that Monitor Faults Monitoring Risk in the United States
 * Creep Meters
 * uses wire
 * weight slides on wire
 * measures horizontal movement
 * Laser-Ranging Device
 * uses a laser beam
 * laser beam gets even the tiniest movement of an earthquake
 * device may get change in distance also
 * Tiltmeter
 * measures the tilt in the ground
 * sees the land rise or sink down
 * liquid will flow from one bulb to another
 * Satellite Monitors
 * gets the images from radar
 * satellite jumps the radio waves away from the ground
 * see tiny changes in elevation
 * know the fault's location and where past earthquakes had been
 * risk is big along the Pacific in California, Washington, and Alaska
 * Rockies have very unlikely giant earthquakes