What primarily determines the frequency of a wave?

The frequency of a wave is defined as the number of complete cycles or oscillations that occur in a given amount of time, typically measured in one second. Therefore, the number of complete cycles that pass a point in one second directly quantifies frequency, which is expressed in hertz (Hz). Higher frequency indicates that more cycles are occurring in that time frame, while lower frequency indicates fewer cycles.

This definition reinforces the fundamental relationship in wave behavior, which connects frequency with other important wave characteristics. For example, the wave speed is calculated by multiplying frequency and wavelength, highlighting that frequency plays a crucial role in defining the overall characteristics of the wave. Understanding this core concept is essential to grasping more complex topics in wave dynamics and oscillatory motion.