Science

what is a seismograph and how does it work?

what other methods do scientist use to measure earthquakes

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  1. http://science.howstuffworks.com/question142.htm

    http://tremor.nmt.edu/faq/how.html

    http://pubs.usgs.gov/gip/earthq1/measure.html

    http://earthquake.usgs.gov/learning/topics/measure.php

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    Ms. Sue

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