Here's why:

* Frequency refers to how many wave cycles pass a point in a given time.

* Wavelength refers to the distance between two corresponding points on consecutive waves (e.g., crest to crest).

The relationship between frequency (f) and wavelength (λ) is inversely proportional:

f = c / λ

Where:

* c is the speed of the wave (constant for a given medium).

This equation shows that:

* Higher frequency (f) means shorter wavelength (λ)

* Lower frequency (f) means longer wavelength (λ)

Example:

* Radio waves have very long wavelengths and low frequencies.

* Visible light has shorter wavelengths and higher frequencies.

* X-rays have extremely short wavelengths and very high frequencies.