Science

Sound wave

sound wave Sound is a variation in pressure. Sound is a  mechanical wave  that results from the back and forth vibration of the particles of the medium through which the sound wave is moving. Compression and refraction A region of increased pressure on a sound wave is called a  compression  (or condensation). A region of decreased pressure on a sound wave is called a  rarefaction  (or dilation). crest- A  crest  is the point on a  wave  with the maximum value of upward displacement within a cycle. A  crest is a point on a surface  w…