Sound And Waves - SS1 Physics Past Questions and Answers - page 1

Sound waves are mechanical waves that require a medium, such as air, water, or solids, to propagate. They are produced by vibrating objects, which create compressions and rarefactions in the medium. In a sound wave, the compressions are regions of high pressure, while rarefactions are regions of low pressure. The wave travels as these pressure variations propagate through the medium in a longitudinal fashion.

Frequency refers to the number of complete cycles of a sound wave that occur in one second and is measured in hertz (Hz). It determines the pitch of the sound, with higher frequencies corresponding to higher-pitched sounds. Amplitude, on the other hand, refers to the maximum displacement of particles in the medium from their equilibrium position during the passage of a sound wave. It is related to the intensity or loudness of the sound, with larger amplitudes corresponding to louder sounds.