* Hertz (Hz) is a unit of frequency. Frequency refers to the number of *cycles* of a wave that occur in one second.

* A single wave doesn't create other waves. A wave is a disturbance that travels through a medium.

Think of it this way:

* A wave source (like a vibrating string or a radio transmitter) creates waves.

* The frequency of the wave source determines how many waves are created *per second*.

So, to answer your question, we need to know the frequency of the wave source. For example:

* A radio station broadcasting at 100 MHz creates 100 million waves every second.

* A tuning fork vibrating at 440 Hz creates 440 waves every second.

In short, it's not about how many waves are *created* every second, but how many *cycles* of a wave occur every second, which is measured in Hz.