Final answer:
Low pitch refers to spaced out waves, while high pitch refers to waves that are together.
Step-by-step explanation:
Low pitch refers to a low frequency of sound waves, while high pitch refers to a high frequency. When it is a low pitch, the waves are spaced out, and when it is a high pitch, the waves are together. This is because the pitch of a sound is related to the frequency of the wave, and a higher frequency results in shorter wavelengths and closer together waves.