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which studies interactions between submarine volcanic activity and seafloor hotsprings, offers a unit called "The Case of the Missing Rumbleometer." High school and middle school students learn about locating the epicenter of an earthquake, calculating the distance to the epicenter from hydrophones (underwater microphones), identifying evidence of a lava eruption, detecting a hydrothermal vent, estimating the age of lava based on animal species in the area, and more. (National Oceanic and Atmospheric Administration)
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