Question

wavelength of a longitudinal wave is the length of one complete wave cycle. in other words, the wavelength is the distance from compression to compression (or rarefaction to rarefaction). this model shows the longitudinal wave in the spring toy. label the model. rarefaction compression wavelength

Explanation:

• Compression: In a longitudinal wave, compression is the region where the particles are closest together. In the spring toy model, the tightly - coiled part of the spring represents compression.
• Rarefaction: This is the region where the particles are farthest apart. In the spring toy, the more spread - out part of the spring (not as tightly coiled as the compression part) represents rarefaction.
• Wavelength: As per the definition, it is the distance from compression to compression (or rarefaction to rarefaction). In the spring toy, the length from one compression region to the next (or one rarefaction region to the next) is the wavelength.

Answer:

• The left - most label (the tightly - coiled part) is "compression".
• The middle label (the more spread - out part) is "rarefaction".
• The right - most label (the length from one compression to the next compression - like region) is "wavelength".