In a sound wave, what property is most closely related to the loudness that a listener perceives?

Explanation

The amplitude of a sound wave, meaning the size of the variation in air pressure it creates, is most closely related to how loud the sound is perceived to be, with larger amplitudes generally corresponding to louder sounds. This same general principle applies to light waves, where amplitude relates to brightness. Amplitude is a separate property from frequency, which instead determines the pitch of a sound rather than its loudness. Explore more Everyday Science MCQs on mcqstutor to keep practicing.