1. What is this? KS3 starter Why is it not good for this? Image of vuvezela: Berndt Meyer © Snapshot Science, 2010Snapshot Science

2. The vuvezela is a horn that is popular at football matches in Africa. It creates a loud noise, but how loud? Loudness is measured in decibels (dB) KS3 Activity © Snapshot Science, 2010Snapshot Science faintmoderate loudvery loudpainful 020406080100120140160 dB whisper alarm clock lawnmower chainsaw conversation jet engine right next to the speakers at a rock concert Where do you think those go on the decibel scale above? a vuvezela

3. Sounds louder than 80 decibels are considered potentially dangerous. Hair cells in the inner ear and the hearing nerve can be damaged by loud sounds. This results in hearing loss. What advice would you give to people who are attending matches at the World Cup? © Snapshot Science, 2010Snapshot Science KS3 Activity