In Year 4 we have been learning about sound in science. We started by thinking about how we can hear sound and discovered that sound travels through waves as air, solid and liquid particles vibrate. We modelled this as a class - when Miss Woodcock plucked the guitar string we (air particles) vibrated against each other and sent the sound waves!
We also learnt how the sound travels through our ear - again we modelled this in groups becoming different parts of the ear each.
This week, we have focused on the difference between volume (loud or quiet) and pitch (high or low). We investigated this using bottles filled with different amounts of water. We concluded, the bottle with the smallest amount of air left at the top made the highest pitch sound because the sound waves are shorter and of a higher frequency!
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