EARTH SCIENCE
EARTHQUAKES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]


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Detailed explanation1: triangulation: To determine the location of an earthquake the distance of the earthquake must be determined from at least three seismic recording stations.
Detailed explanation2: In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event.
Detailed explanation3: Seismic stations detect earthquakes by the tracings made on seismographs. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter.
Detailed explanation4: You need one because the epicenter will be somewhere along that circle. You need three because three is the minimum number of circles that will intersect at one point.
Detailed explanation5: Answer. To find an earthquake epicenter you need at least three seismographs.