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        4-6

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        Part of Idaho PTV
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        Earthquakes

        This video segment from IdahoPTV's D4K describes the structure of the earth and how the movement of tectonic plates causes earthquakes, defines epicenter, seismograph, and intensity. It shows the tools scientists use to study earthquakes. There are photos of the San Francisco Earthquake of 1906, and the Idaho earthquake of 1983 and the video encourages you to be prepared and have an emergency plan if one should occur.

        Visit the D4K companion Web site to learn more about Earthquakes: D4K: “Earthquakes”

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