Do you agree now that force/energy is needed to do motion? ___. The amount of force/energy released as the Earth moves (earthquake) is measured by an open-ended Richter scale from 1.0 onwards. Can you imagine how much force is needed for an earthquake to occur? Cite your ideas.
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Answer:
A seismograph is the primary earthquake measuring instrument. The seismograph produces a digital graphic recording of the ground motion caused by the seismic waves. The digital recording is called a seismogram. A network of worldwide seismographs detects and measures the strength and duration of the earthquake's waves.