Here's why:

* Wavelength and Frequency are Inversely Proportional: The speed of sound is constant in a given medium. This means that as the frequency of a sound wave increases, its wavelength decreases.

* High Frequency = High Pitch: Sounds with high frequencies are perceived as having a high pitch.

Examples of sounds with short wavelengths (high frequencies):

* High-pitched whistles

* The sound of a piccolo

* A soprano singing a high note

Let me know if you have any other questions!