Here's why:
* Wavelength: The distance between two consecutive points in a wave that are in the same phase (e.g., two compressions or two rarefactions in a longitudinal wave) is the wavelength.
* Amplitude: The amplitude of a longitudinal wave is the maximum displacement of the particles from their rest position. This is the distance between the undisturbed position of the particles and the point of maximum compression or rarefaction.
Think of it like this:
* Wavelength: The distance between the peaks of two waves (compressions in this case).
* Amplitude: The height of a wave peak (the maximum displacement of particles from their resting position).
Let me know if you'd like a visual representation of this!
