| A | B |
|---|
| Wave | a disturbance that transmits energy through matter or space |
| Medium | the material through which a wave travels |
| Longitudinal Wave | a wave in which the vibration of the medium is parallel to the direction the wave travels |
| Transverse Wave | a wave in which the particles of the medium move perpendicularly to the direction the wave is traveling |
| Wavelength | the distance between two corresponding parts of a wave |
| Frequency | the number of complete wavelengths that pass a point in a given time |
| Reflection | the bouncing back of a wave when it hits a surface through which it cannot pass |
| Crest | the highest point of a wave |
| Amplitude | The distance from the midpoint to the crest of the wave, or from the midpoint to the trough |
| Trough | the lowest point of a wave |
| Compression | the part of a longitudinal wave where the particles of the medium are close together |
| Rarefaction | The part of a longitudinal wave where the particles of the medium are far apart |
| Refraction | the bending of a wave as it changes medium |
