| A | B |
|---|
| periodic motion/wave | regular and repeating motion |
| transverse wave | displaced particles perpendicular |
| trough | maximum amount of negative or downward displacement |
| crest | The maximum amount of positive or upward displacement |
| amplitude | maximum mount of displacement of a particle |
| wavelength | complete wave cycle |
| resting point | not moving |
| longitudinal wave | particles displaced parallel |
| compression | longitudinal traveling at maximum density |
| rarefaction | longitudinal traveling at minimum density |
| electromagnetic wave | wave produced by acceleration of an electric charge |
| frequency | particles of a medium vibrating when a wave passes |
| period | one complete vibrational cycle |
| hertz | 1 cycle/second |
| medium | transports the wave |
| reflection | when waves reach the barrier |
| refraction | when waves pass one medium |
| diffraction | when waves pass through opening or near a barrier |
| constructive interference | 2 waves displacing in the same direction |
| destructive interference | waves displacing oppsite directions |
| pitch | sensation of frequency |
| standing wave | points appear to be standing |
| node | standing still maximum displacement |
| antinode | very little displacement |
| electromagnetic spectrum | continuous waves of frequency |
