Question

rarefaction).
this model shows the longitudinal wave in the spring toy. label the model.

wavelength compression rarefaction

Explanation:

• Compression: In a longitudinal wave, compression is the region where the particles (or in this case, the coils of the spring) are closest together. Looking at the spring - toy model, the area where the coils are bunched up is the compression.
• Rarefaction: Rarefaction is the region where the particles (coils) are farthest apart. In the spring - toy model, the area where the coils are more spread out compared to the normal spacing is the rarefaction.
• Wavelength: The wavelength of a longitudinal wave is the distance between two consecutive compressions (or two consecutive rarefactions). So, in the model, the distance that encompasses one full cycle of compression - rarefaction - compression (or rarefaction - compression - rarefaction) is the wavelength.

Answer:

• The left - most label (the area of bunched - up coils) is "compression".
• The right - most label (the area of more spread - out coils) is "rarefaction".
• The bottom label (the distance that includes one full pattern of compression and rarefaction) is "wavelength".