| Term | Definition |
|---|---|
| Frequency | number of waves in an certain amount of time. |
| Amplitude | Distance from the middle of the wave to the crest or trough |
| Wavelength | Distance from crest to crest or trough to trough. |
| Rarefaction | The bending of a wave when it enters a new medium and changes speed. |
| Reflection | Bounce off a surface ,Hologram-to cal point |
| ultraviolet | Blacklight |
| Electromagnetic waves | A wave produced by the acceleration of an electric charge. |
| waves carry _______________ | Energy |
| Medium particles_________to pass energy | Vibrate |
