what label should replace letter b? close together = compression compression amplitude rarefaction wavelength
what label should replace letter b? close together = compression compression amplitude rarefaction wavelength
Answer
Explanation:
Step1: Recall wave terminology
In a longitudinal wave (like sound), compressions are regions where particles are close together, and rarefactions are regions where particles are spread out (far apart). The diagram shows a longitudinal wave with 'a' as compression (close together), so 'b' should be the opposite—rarefaction (particles spread out).
Step2: Evaluate options
- Compression: Already defined as close together (matches 'a'), not 'b'.
- Amplitude: Related to wave height/intensity, not spacing of particles.
- Rarefaction: Matches the region with particles spread out (opposite of compression), so this is 'b'.
- Wavelength: Distance between two consecutive compressions/rarefactions (label 'c' likely), not 'b'.