Which of the following best describes the term 'frequency' in relation to sound waves?

The term 'frequency' in relation to sound waves is defined as the number of waves that pass a given point in one second. This is a critical concept in wave physics, including sound, as frequency directly relates to how we perceive pitch. Higher frequency sound waves correspond to higher pitches, while lower frequency waves relate to lower pitches.

Thinking of frequency in terms of sound waves, it quantifies how often the wave oscillates over a defined period, typically measured in hertz (Hz). For instance, a frequency of 440 Hz indicates that 440 cycles of the sound wave occur each second. This measurable characteristic helps in identifying different sounds and their properties effectively.

In comparison, other concepts mentioned in the choices refer to different wave characteristics. The distance between wave peaks pertains to wavelength, which influences sound quality but not pitch directly. The speed of sound waves describes how quickly sound travels through a medium but does not address the rate of repetition of the waves themselves. Lastly, intensity relates to how strong or loud a sound is, which, while significant, does not factor into the definition of frequency.