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20 terms
Terms | Definitions |
|---|---|
 wave | a periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium |
| medium | a physical environment in which phenomena occur |
| mechanical wave | A wave that requires a medium through which to travel. |
| electromagnetic wave | a wave that consists of oscillating electric and magnetic fields, which radiate outward at the speed of light |
| transverse wave | a wave in which the particles of the medium move perpendicularly to the direction the wave is traveling |
| longitudinal wave | a wave in which the particles of the medium vibrate parallel to the direction of wave motion |
| crest | the highest point of a wave |
| trough | the lowest point of a wave |
| amplitude | the maximum distance that the particles of a wave's medium vibrate from their rest position |
| wavelength | The distance from any point on a wave to an identical point on the next wave |
| period | the time that it takes a complete cycle or wave oscillation to occur |
| frequency | the number of cycles or vibrations per unit of time |
| Doppler Effect | An observed change in the frequency of a wave when the source or observer is moving |
| reflection | the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through |
| diffraction | a change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening |
| refraction | the bending of a wavefront as the wavefront passes between two substances in which the speed of the wave differs |
| interference | the combination of two or more waves that results in a single wave |
| constructive interference | Any interference in which waves combine so that the resulting wave is bigger than the original waves |
| destructive interference | any interference in which waves combine so that the resulting wave is smaller than the largest of the original waves |
| standing wave | a pattern of vibration that simulates a wave that is standing still |
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