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Waves and Sound
| Term | Definition |
|---|---|
| Wave | transfers energy from place to place without transferring matter |
| Medium | the matter through which sound travels |
| Transverse wave | the wave travels perpendicular to the medium (ex. light) |
| Longitudinal wave | the wave travels parallel to the medium (ex. sound) |
| Wavelength | distance between two points on a wave where the wave pattern is repeated |
| Amplitude | maximum displacement from equilibrium |
| Frequency | the number of wavelengths in one second, expressed in a unit called Hertz or the # of cycles/ time |
| Period | the amount of time it takes for one wave to pass or the time/cycle |
| Wave speed | velocity = frequency x wavelength |
| Sound | caused by waves that are picked up by your ears (longitudinal) |
| Speed of sound depends on | the temperature and elasticity of the medium through which the sound travels |
| Pitch | a change in frequency or wavelength |
| Doppler effect | change in frequency due to the motion of the source |
| Interference | occurs when two or more waves interact with each other |
| Standing wave | A wave pattern that remains in a constant position |
| Node | the stationary part of a standing wave |
| Antinode | the region of maximum displacement and maximum energy |
| Resonance | a forced vibration matches the objects natural frequency |