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HVJ Waves
Talbert HVJ Waves
| Question | Answer |
|---|---|
| Electromagnetic Spectrum | Range of electromagnetic waves; includes radio waves, infrared waves, visible light, ultraviolet waves, X-rays, and gamma rays |
| Radio Waves | Have the lngest wavelength and shirtest frquesncy; used for radio, television, and radar |
| Infrared Rays | You cannot see these waves, but you can feel them as heat |
| Ultraviolet Rays | These waves are present in the sunlight; They can cause sunburn; are used to kill bacteria |
| X-rays | These waves have a very short wavelength and a very high frequency; They can pass through most solid objects; They are used in medicine to form images of banes and internal organs |
| Gamma Rays | These have a shorter wavelength and a higher frequency than X-rays; They are given off during nuclear reactions |
| Medium | Substance through which waves can travel |
| Waves | Disturbances that transfer energy from place to place |
| Compression | Part of a medium where the particles are close together |
| Crest | high point of a wave |
| Longitudinal Wave | Wave in which the particles of the medium move back and forth in the direction of the wave motion |
| Rarefaction | Part of a medium where the particles are far apart |
| Transverse Wave | wave in which the particles of the medium move up and down at right angles to the direction of the wave motion |
| Trough | Low point of a wave |
| Amplitude | height of a wave |
| Frequency | Number of complete waves passing a point in a given time |
| Hertz | Unit used to meaure the frequency of a wave |
| Doppler Effect | Apparent change in frequency of waves |