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Earthquakes 6.11
Measuring Earthquake Magnitude
| Question | Answer |
|---|---|
| Older type of seismometer in which a suspended, weighted pen wrote on a drum that moved with the ground. | seismograph |
| the printed record of seismic activity produced by a seismometer. | seismogram |
| a machine that measures seismic waves and other ground motions. | seismometer |