| A | B |
|---|
| wave | a disturbance that transfers energy from one place to another without transferring matter |
| mechanical wave | a wave that can travel only through matter |
| transverse waves | a wave in which the disturbance is perpendicular to the direction of travel |
| crest | the highest points on a transverse wave |
| trough | the lowest points on a transverse wave |
| longitudinal wave | makes the particles in a medium move parallel to the direction that the wave travels |
| compression | the regions of a longitudinal waves where the particles in the medium are closest together |
| rarefaction | the regions of a longitudinal wave where the particles are farthest apart |
| electromagnetic waves | a wave that can travel through empty space and through matter |
| amplitude | the maximum distance that the wave moves from its rest position |
| wavelength | the distance from one point on a wave to the same point on the next wave |
| frequency | the number of wavelengths that pass by a point each second |
| medium | a material in which a eve travels through |
