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sci.quiz2-6-09

Science quiz on Earthquakes 2-6-09

QuestionAnswer
focus focus the point beneath earths surface where rock breaks under stress and causes an earthquake
epicenter the point on earths surface directly above an earthquakes focus
seismic waves a vibration that travels through earth carrying the energy released during an earthquake
P waves a type of seismic wave that compresses and expands the ground
S waves a type of seismic wave that moves the ground up and down or side to side
surface waves a type of seismic wave that forms when P waves and S waves reach earths surface
seismograph a device that records ground movements caused by seismic waves as they move through earth
magnitude the measurement of an earthquakes strength based on seismic waves and movement along faults
mercalli scale a scale that rates earthquakes according to their intensity and how much damage they cause
richter scale a scale that rates seismic waves as measured by a particular type of mechanical seismograph
moment magnitude scale a scale that rates earthquakes by estimating the total energy released by an earthquake
Created by: gpc1313
 

 



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