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How are Earth's layers understood from global records of waves from an earthquake focus?

Answer and explanation

Correct answer: From arrival times and velocity differences at different stations

Seismic stations record wave time and path which reveal internal boundaries. In exams remember the role of seismographs.

Related tags

GeographySeismographSeismic RecordsEarth LayersInterior Structure Of The EarthInterior Of The EarthClass 11 Mcq

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