Here's a breakdown:
* Longitudinal Waves: These waves travel in the same direction as the particles of the medium they're traveling through. Examples include sound waves.
* Compression: A region of high pressure where the particles are close together.
* Rarefaction: A region of low pressure where the particles are spread out.
The distance from one compression to the next compression (or one rarefaction to the next rarefaction) is the wavelength. This represents one complete cycle of the wave.
