- Sound waves are mechanical waves that require a medium (like air, water, or solids) to propagate. - In gases and liquids, sound waves are longitudinal. This means that the particles of the medium vibrate back and forth parallel to the direction in which the wave is traveling. This creates compressions (regions of higher density/ pressure) and rarefactions (regions of lower density/pressure) that propagate through the medium. - In solids, sound can propagate as both longitudinal and transverse waves. Transverse waves involve particles vibrating perpendicular to the direction of wave propagation (like waves on a string or light waves). - Sound from a car travels through the air (a gas). Therefore, these waves are longitudinal.
Sound waves from a sounding car are
Asked in TNPSC CS Prelims 2014 · Topic: Sound (Nature and Propagation of Sound Waves)
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