Links to environment issues

Work on the nature of sound can lead to the discussion of noise pollution. The children can discuss the issues of loud sounds that are unpleasant and may cause damage to ears and hearing. An audit of sounds in the locality can be carried out. Children can investigate ways of controlling loud sounds. They should explore ways of muffling sounds, for example wrapping a clock, radio or ‘talking’ toy in different materials, such as pieces of foam, fabric, paper, cotton wool and polystyrene.

Links to previous activities can be made. Children will know that sound travels through solid objects better than through air. They will discover that materials with air holes (porous materials) absorb sounds and will make better sound insulators than materials such as metal or wood, which reflect sounds.