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        9-12

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        Signal to Noise Ratio

        Investigate the use of waves and technology for communication in the real-world context of satellites sending information back to Earth, in this lesson adapted from NASA. Students use an online interactive to explore transverse waves and the signal-to-noise ratio, a fundamental concept in communications. The lesson also includes a written activity that addresses relevant topics, such as proportions and ratios. Students will use the interactive to analyze data and investigate how the strength of a communication signal decreases as the distance between a spacecraft and the receiver increases.

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