| 1. | Earthquake magnitudes are calculated according to ground motion recorded on seismographs.
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| 2. | Seismographs flicker back and forth measuring tremors deep inside the mountain.
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| 3. | Referring to Levy as " the national seismograph,"
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| 4. | They focus on seismic and tectonic activities by using a seismograph.
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| 5. | Modern digital seismograph records are better adapted to direct computer use.
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| 6. | Only with a third seismograph would there be a precise location.
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| 7. | In 1947, the seismograph was given to the British Museum.
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| 8. | Gary suspected a seismograph crew working on the ranch had killed it.
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| 9. | He lowers a shoulder and a seismograph needle in the Philippines twitches.
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| 10. | The blast was picked up on a seismograph in Denver.
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