Here's why:
* Frequency and Pitch: The frequency of vibration directly corresponds to the pitch of the sound we perceive. Higher frequency means a higher pitch.
* Sound Waves: Vibrations create sound waves that travel through the air. The number of waves that pass a point per second is the frequency.
* Human Perception: Our ears are sensitive to a range of frequencies. High frequencies translate to sounds we hear as high-pitched (like a whistle or a bird's chirp).
Example:
* A tuning fork vibrating at 440 Hz produces the note "A" which is a relatively low pitch.
* A small, thin metal plate vibrating very quickly might produce a sound so high-pitched it's almost inaudible to humans.
