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===Sound Volume===
: The [[Volume (Sound)|volume]] of a [[sound]] is how loud or quiet it is.
: [[Volume (Sound)|Volume]] is determined by the [[amplitude]] of the [[wave]] the maximum [[displacement]] of the [[wave]] from its [[Equilibrium Position(Physics)|equilibrium position]].
{| class="wikitable"
|+ [[Longitudinal Wave]]s cannot be easily pictured so they are represented by [[Transverse Wave]]s on an [[Oscilloscope]] screen.
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Sound; transmission, page 58, GCSE Physics, Pearson Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Sound; ultrasound, pages 106-108, GCSE Physics, CGP, Edexcel '']
====OCR====
:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Sound, page 187, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945687/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945687&linkCode=as2&tag=nrjc-21&linkId=9a598e52189317a20311d7a632747bc9 ''Sound, pages 59, 60, 64, Gateway GCSE Physics; The Revision Guide, CGP, OCR '']