what is seismograph or seismography ?
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Scientists can measure and record the seismic waves made by an earthquake using an instrument called a seismograph. The word seismograph is the combination of two words. Seismos is a Greek word that means 'shaking,' and a graph is a way of recording something. So, 'seismograph' means a machine that records shaking
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The Instrument that is used to measure earthquakes are simply known as seismograph
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