What does wavelength refer to in sound?

Wavelength in sound refers to the distance between successive crests or troughs of a sound wave. This definition encompasses the spatial characteristics of the wave, indicating how far apart the peaks (or high-pressure areas) of the sound wave are from each other. Understanding wavelength is crucial in sound theory as it directly affects the frequency of the sound, which in turn influences pitch. The relationship is such that shorter wavelengths correspond to higher frequencies and pitches, while longer wavelengths are associated with lower frequencies.

The other options do not accurately represent the concept of wavelength. The distance between sound waves at maximum amplitude is an unclear description that doesn’t directly define wavelength. Time taken for sound to travel refers to the speed of sound, which is a different concept altogether. Lastly, amplitude describes the height of the sound wave, indicating the volume or loudness, but it does not relate to the concept of wavelength itself. Thus, option B clearly identifies the correct understanding of wavelength in the context of sound waves.