| A | B |
|---|
| amplitude | height of a wave |
| directly related to the amplitude of a wave | amount of energy in a wave |
| frequency | number of waves / sec. measured in Hz |
| wavelength | distance from crest to crest |
| particles vibrate perpendicular to the flow of energy | transverse wave |
| particles vibrate in the direction of the energy flow | compressional wave |
| rarefaction | part of a longitudinal wave where particles are spread apart |
| rest (equilibrium) position | place where a transverse wave starts and ends |
| crest / trough | top of a wave / bottom of a wave |
| calculating wave velocity | frequency x wavelength |
| velocity divided by wavelength | calculating wave frequency |
| does not travel with the wave | medium |
| move with the wave | energy |
| mechanical wave | wave that requires a medium |
| electromagnetic wave | wave that doesn't require a medium |
