Year 8 Sound

Covering the key words and concepts for Topic L in year 8.
How loud or soft a sound is?. How high or low a sound is?. Sounds are made by something moving backwards and forwards.. Used to produce a single frequency and to help musicians find a note.. An instrument used to make a graph of sound waves.. The number of sound waves per second.. This depends on the frequency.. The distance between the tops of two waves.. The loudness of a sound depends on this.. Sound cannot travel through this?. What energy change takes place in your ears?. Produce impulses which travel down a nerve to the brain?. Can cause temporary deafness by not allowing the eardrum to vibrate?. There is no cure for this condition?. The units for the loudness of a sound.. An unpleasant sound?. The quietest sound you can hear?. This makes it more difficult for sound to travel.. Also known as the speed of sound?. The way that sound (and light) travel..

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