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O Seismogram
O Seismograph
O Richter scale
2 points
The magnitudes of earthquake is
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Answer:The Richter scale. Resources. A seismograph is an instrument used to detect and record motion at Earth ’ s surface occurring as a result of earthquakes. Such devices have a very long history that can be dated to the second century AD, when the Chinese astronomer and mathematician Chang Heng invented a simple seismoscope. The term seismoscope is reserved for instruments that detect but do not record …
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