An animated sequence that describes how sounds occur when objects vibrate. The clip illustrates the route sound waves take through the air to our ears, causing messages to be sent to our brains as we recognise or ‘hear’ a sound. We are told that the faster something vibrates, the higher the note it produces.

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Pupils could explore how sounds are made by vibrating objects. They could try twanging strings of different thickness. Can they prove the point made in the clip that ‘the faster something vibrates, the higher the sound will be’? Davina in the clip says that thinner strings vibrate faster than thicker ones and so make higher sounds. The children could experiment with rubber bands stretched across a plastic tub. Do they agree with Davina?