EARTH SCIENCE
EARTHQUAKES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The farthest circle from all the seismographs is the epicenter location.
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The single point where the three circles intersect is the epicenter location.
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The closest point to the first seismograph that registered is the epicenter location.
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None of the above
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Detailed explanation-1: -triangulation: To determine the location of an earthquake the distance of the earthquake must be determined from at least three seismic recording stations. Circles with the appropriate radius are then drawn around each station. The intersection of three circles uniquely identifies the earthquake epicenter.
Detailed explanation-2: -Triangulation can be used to locate an earthquake. The seismometers are shown as green dots. The calculated distance from each seismometer to the earthquake is shown as a circle. The location where all the circles intersect is the location of the earthquake epicenter.
Detailed explanation-3: -The three circles intersect at a single point. This is the earthquake’s epicenter (Figure below). Seismographs in Portland, San Francisco, and Salt Lake City are used to find an earthquake epicenter.
Detailed explanation-4: -Scientists use triangulation to find the epicenter of an earthquake. When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. Every earthquake is recorded on numerous seismographs located in different directions.
Detailed explanation-5: -If you have worked carefully, the three circles should intersect at one point. This point marks the epicenter of the earthquake.