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How scientists were able to know about the earths interior by studying earthquakes and waves?

April 26, 2017able earth earthquakes Geology interior Mathematics sciences scientists

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How scientists were able to know about the earths interior by studying earthquakes and waves?

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Waves travel at different speeds through different densities of rock (molten or otherwise). By measuring the speed of seismic waves during earthquake activity, geologists are able to determine the relative densities of the interior and thus what it is comprised of.