In Sound, the inhabitants of Mammoth Island learn how sound energy travels in waves, while herding their mammoths towards greener pastures. A visiting inventor explains that sounds are caused by the movement of molecules -- what scientists refer to as vibrations. Thinking about how our ears translate vibrations into sound leads a bright young Islander, Olive, to create a primitive microphone, amplifier and loudspeaker!

Teacher's guide available under Additional info tag. Also available in Streaming under the title "The Sound of a Mammoth".

Based on the Dorling Kindersley book "The Way Things Work" by David Macaulay.