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How to Build a Hydrophone
 How to Build a Hydrophone
(Level: High School)
It was once thought that the oceans were a silent place. However, if you were to drop a hydrophone or underwater microphone into the water, you would soon discover that the underwater world is quite noisy. A hydrophone picks up acoustic signals and then transfers the sounds into a receiver that allows you to hear them. The following instructions allow you to inexpensively (under $40) build your own hydrophone. Use this hydrophone to hear sounds in your aquarium or go down to the beach and drop it in the water. File 1: Hydrophone Activity Diagram (PDF, 192 KB) |
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