ESAY+2.4

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Vocabulary

 * creep meters**:An **electric meter** or **energy meter** is a device that measures the amount of electrical device supplied to a residence or business.


 * laser-ranging devices**:-a laser - ranging device uses a laser beam to detect even tiny fault movements.


 * tiltmetes:-**A **tilt meter** is an instrument designed to measure very small changes from the horizontal level, either on the ground or in structures.


 * outline**

devices that monitor faults:-in trying to predict earthquakes geologisthave invited instuments to measure the ground movements that occur along faults four types of devices creep meters,laser-ranging devices,tiltmeters,satellite montors

monitoring risks in united states:-geologists do know that earthquakes are likely whereever plate movement store energy in the rock along faults .geologists can determine earthquake risk by locating where faults are active and where past earthquakes have occured

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