In the context of a sound wave, the terms "amplitude" and "wavelength" refer to different characteristics of the wave.
Amplitude: The amplitude of a sound wave represents the maximum displacement or variation in pressure of the particles in the medium through which the sound wave is propagating. It is a measure of the intensity or loudness of the sound. In simpler terms, the amplitude determines the "height" or "strength" of the wave. Higher amplitudes correspond to louder sounds, while lower amplitudes correspond to softer sounds. Amplitude is usually measured in units such as decibels (dB).
Wavelength: The wavelength of a sound wave refers to the distance between two consecutive points that are in phase with each other. In other words, it is the physical distance traveled by the sound wave during one complete cycle. Wavelength is often represented by the Greek letter lambda (λ) and is measured in units of length, such as meters (m). It is inversely related to the frequency of the sound wave. Higher frequencies have shorter wavelengths, while lower frequencies have longer wavelengths.
To summarize, the amplitude of a sound wave relates to the intensity or loudness of the sound, while the wavelength describes the spatial distance between consecutive points in phase.