KGMK+2.4

toc =2.4 Monitoring Faults=

Vocabulary
movement of the ground
 * Creep Meters**: its a device that uses a wire thats stretched across a fault to measure horizontal
 * Laser-Ranging Devices**: its a device that uses laser beam to detect even small fault movements
 * Tiltmeters**: it measures when the ground tilts
 * Satellite Monitors**: its a radar that make images of faults, radio waves bounce off the ground

Devices that Monitor Faults

 * geologists invents tools to record movements from the ground that occur along faults
 * the tools they make measures stress and it also sees if there is deformation in the crust
 * geologists uses this to see if there are signs that an earthquake is going to happen
 * the only clues that geologists found

Creep Meters

 * creep meters they measures horizontal movement on Earth's ground
 * On the device they use to measure horizontal movement is that they have wire attached to a weight that is able to slide if the fault moves, and the other side the wire is anchored to a post
 * Geologists are able to measure how much the weight moved against the measuring scale

Laser-Ranging Devices
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 * laser-ranging devices use laser beams to detect small movement around the fault
 * this device collects the data when the laser beam travels to the reflector and bounces back
 * Geologists use this device to see if the fault's action changes

Tiltmeters

 * tiltmeters takes data of the ground's movement

Monitoring risk in the united states

 * in order to find out when an earthquake might happen geologists look where past earthquakes have happened


 * the northern part of the united states have had a lot of big earthquakes
 * the most earthquakes happen near the pacific area