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Measuring Earthquake Magnitude

Scientists use seismometers to measure earthquake magnitude.

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Measuring Earthquake Magnitude
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Vocabulary

seismogram

seismogram

Seismogram is the printed record of seismic activity produced by a seismometer.
seismograph

seismograph

Older type of seismometer in which a suspended, weighted pen wrote on a drum that moved with the ground.
seismometer

seismometer

A machine that measures seismic waves and other ground motions.

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