How do sound waves travel through air?
Sound waves are longitudinal waves which means that the particles vibrate in the same direction of travel. They are described as ‘pulsing’ through the medium. An example of a longitudinal wave is if you have a slinky and you push it forwards and backwards so that pulses go through the slinky. There are areas where the particles are close together (compression) and areas where the particles are spread out (rarefraction). Some useful websites for pictures http://www.science-class.net/Notes/Image… http://www.antonine-education.co.uk/phys… Some useful websites for info http://www.bbc.co.uk/schools/gcsebitesiz…
