![]() This speed is faster in water and even faster in solid materials due to tighter particle arrangements. For instance, in dry air at 25☌, sound travels at approximately 340 m/s. Speed: The speed at which sound travels depends on the medium. Wavelength: The distance between two consecutive compressions or rarefactions. The amplitude determines the sound's "loudness" or volume. The human ear can generally detect sounds in the range of 20 Hz to 20,000 Hz.Īmplitude: Represents the maximum displacement of vibration caused by sound wave it propagates through a medium. High-frequency sounds are high-pitched, while low frequencies sound low. Properties of Soundįrequency: Measured in Hertz (Hz), it defines the number of vibrations per second. When a sound wave propagates through air, compression and rarefaction also correspond to points of high and low air pressure respectively. This movement leads to areas of compression (where particles are close together) and rarefaction (where they are spread apart). In these waves, the medium's particles move parallel to the direction of wave propagation. Unlike transverse waves, where the medium's displacement is perpendicular to the wave's direction, sound waves are longitudinal waves. Sound is a mechanical wave that requires a medium to propagate and transfer energy (like air, water, or solid materials) It arises from the vibrations of an object, which then causes the surrounding medium's particles to vibrate in kind.
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