Scientific Eye – Hearing the Sound – a 19m 16s video:
A video lesson on Sound & Hearing (11m).
Science in Action – Sound – a 19m 11s video.
KS3 Bitesize foundation level – Light & Sound – a 21m 17s video.
Scientific Eye – Hearing and Sound – a 19m 26s video:
The Human Body – The Ear (8m 30s).