What is the term used to describe one oscillation per second?

The term used to describe one oscillation per second is frequency. In the context of waves, including sound and electromagnetic waves, frequency is a fundamental concept that refers to the number of cycles or oscillations that occur in a given time frame, usually measured in hertz (Hz), where one hertz equals one cycle per second. Understanding frequency is crucial in various fields, including acoustics, telecommunications, and physics.

The other terms listed relate to different properties of sound or waves. Decibels (dB) measure the intensity or loudness of a sound, intensity refers to the energy per unit area carried by a wave, and amplitude measures the height of the wave, which is related to the strength or power of the wave. While these concepts are important, they do not define the rate of oscillation like frequency does.