What happens to the characteristics of a wave when the pitch is higher?

When the pitch of a sound increases, this is directly related to the frequency of the wave. A higher pitch means that the sound waves are vibrating more frequently. Since frequency and wavelength are inversely related, when the frequency increases, the wavelength must decrease in order to maintain the relationship described by the wave equation v = fλ, where v is the wave speed, f is the frequency, and λ (lambda) is the wavelength.

This means that as pitch becomes higher due to an increase in frequency, the distance between successive wave crests (the wavelength) becomes shorter. Thus, a higher pitch leads to a decreased wavelength.

While amplitude relates to the loudness of a sound, and speed can vary in different media, these factors do not directly correlate with the change in pitch in relation to wavelength. Therefore, the observation that the wavelength decreases when the pitch is higher is consistent with the fundamental principles of wave behavior in physics.