Final answer:
One Hertz is the unit of frequency equivalent to one cycle per second; it measures how many times a wave oscillates in a second. A higher frequency indicates a shorter period for the wave's oscillation.
Step-by-step explanation:
One Hertz (Hz) represents the frequency of one oscillation or cycle per second. This SI unit for frequency indicates how many waves pass a point in a single second. For example, if you count 10 crests of a wave passing by each second, the frequency of the wave is said to be 10 Hz. The term Hertz is in honor of Heinrich Hertz, a physicist who discovered radio waves. It's important to note that the relationship between frequency and the period of a wave is inversely proportional, meaning a higher frequency implies a shorter period of the wave's oscillation.