Here's a breakdown:

* Wave cycle: A complete oscillation of the wave, from its highest point (crest) to its lowest point (trough) and back to the starting point.

* Fixed point: A stationary location where you're observing the wave.

* Time: The duration you're observing the wave cycles.

Think of it like this:

Imagine you're standing on a pier watching waves roll in. The frequency of the waves tells you how many waves crash against the pier each minute.

Here's a key point:

* Higher frequency means more waves per unit of time, which translates to a faster wave.

* Lower frequency means fewer waves per unit of time, which translates to a slower wave.

Units of frequency:

Frequency is usually measured in Hertz (Hz). One Hertz represents one wave cycle per second.