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Sound travels through liquids as well as through the air, as demonstrated by a team of synchronised swimmers. We learn how sound is transmitted through the particles in the water in the same way as it is in the air. The synchronised swimmers have no difficulty in hearing the music for their routine from a special underwater speaker.
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First broadcast:
17 May 2007

Classroom Ideas

Students could investigate underwater communication. They could compare the sounds made by whales, fish and other marine animals, investigating how they produce and detect sound vibrations. They should consider how the types of sound animals produce relate to the fact they are transmitted through water and what influence the distance they are communicating over has. Underwater acoustics could be investigated as part of an added value unit.

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