name the instrument used to measure earth quake?
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A seismograph ,or a seismometer, is an instrument used to detect and record earthquakes.
A numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations is called a Richter scale.
Explanation:
Generally a seismograph consists of a mass attached to fixed base during an earthquake the base moves and the mass does not.
The most destructive earthquakes typically have magnitudes between about 5.5 and 8.9.
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seismograph is the instrument used to measure earth quake.
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