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Waves
Mechanical Waves
Term | Definition |
---|---|
The matter through which a mechanical wave travels; can be a solid, liquid, or gas | Medium |
Disturbances that transmits energy through matter | Mechanical wave |
The number of crests that pass a certain point in a given amount of time | Freqency |
Cycles per second, or how many crests pass a certain point per second | Hertz (Hz) |
High pressure area. Particles of the wave are crowded together | Compressioin |
Low pressure area where particles are spread out | Rarefaction |
Particles of the medium vibrate in a direction perpendicular to the direction the wave moves (think stadium wave) | Transverse Wave |
The highest point of the wave above the rest position | Crest |
The lowest point of a wave below the rest position | Trough |
Particles of the medium vibrate in a direction parallel to the direction the wave moves (think slinky) | Longitudinal Wave |
The distance from one crest to the next crest | Wavelength (T) |
The distance from the midpoint to the height of the crest or bottom of the trough | Amplitude |
The distance from the end of one compression to the end of the next compression or the end of one refraction to the next refraction | Wavelength (L) |
Particles move both parallel and perpendicular to the motion of the wave and their motion becomes circular | Surface Wave |