What term is used to describe the number of oscillations per second?

The term used to describe the number of oscillations per second is frequency. In physics and various scientific fields, frequency is a fundamental concept that refers to how many times a periodic event occurs in a given time frame, typically measured in hertz (Hz). When discussing oscillations, such as waves or vibrations, frequency quantifies the repetition rate; for instance, a frequency of 5 Hz indicates that the oscillation happens five times every second. Understanding this concept is crucial in fields like sound, light, and other wave phenomena, as it helps describe the behavior and characteristics of these oscillatory systems.

Amplitude refers to the maximum extent of a vibration or oscillation from its mean position, while velocity indicates the speed of something in a given direction. Cadence generally refers to rhythmic flow or the beat in music or physical activity, rather than a measure of oscillations. Therefore, frequency is the most accurate term for the given definition.