How Does a Seismograph Work?

Answer

A seismograph is a very unique device that is used to measure earthquakes. This works by being connected to bedrock and measuring vibrations. You can find more information here: http://edhelper.com/ReadingComprehension_54_2604.html
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Seismographs are placed on to the Earth's surface, and firmly secured to prevent damage. When an earthquake happens, most of the seismograph shakes along with ...
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