* Wavelength and Frequency are Inversely Proportional: The relationship between wavelength (λ) and frequency (f) is described by the following equation:

λ = c / f

Where:

* λ is the wavelength

* f is the frequency

* c is the speed of light (or the speed of the wave in the medium it's traveling through)

* Decreasing Frequency: This equation shows that if you decrease the frequency (f), the wavelength (λ) must increase to maintain a constant speed (c).

Examples of Increasing Wavelength:

* Sound Waves: A lower pitch sound has a lower frequency and a longer wavelength.

* Light Waves: Red light has a longer wavelength than blue light. Shifting light toward the red end of the spectrum increases its wavelength.

* Radio Waves: AM radio waves have longer wavelengths than FM radio waves.

Important Note: The speed of the wave (c) is constant in a given medium. Changing the frequency directly impacts the wavelength.