What term describes the number of full wavelengths that pass through a point in a given amount of time?

The term that best describes the number of full wavelengths that pass through a point in a given amount of time is frequency. Frequency refers to the rate at which cycles of a wave occur and is typically measured in hertz (Hz), which indicates the number of cycles per second. In the context of sound waves, higher frequency corresponds to higher pitch, while lower frequency corresponds to lower pitch.

Understanding frequency is crucial in various fields, including acoustics and music, as it allows individuals to differentiate between sounds based on how quickly the sound waves vibrate. The concept of frequency is a fundamental aspect of wave behavior, encompassing a wide range of applications beyond just sound, including light waves and other forms of electromagnetic radiation.