| A | B |
|---|
| Red light | Electromagnetic wave in the visible part of the spectrum |
| ultra violet | Electromagnetic wave shorter than visible light |
| infra red | Electromagnetic wave longer than visible light |
| Radio waves | Wave that makes cell phones work |
| sound waves | mechanical compression wave that moves through air |
| Seismic wave | Mechanical compression wave that moves through rock only |
| guitar string | Mechanical transverse wave that causes a mechanical compression wave that we hear as a tone |
| electromagnetic wave | Waves that do not need a medium to move through |
| mechanical waves | Waves that require a medium to move through |
| wave length | Distance from one crest to the next in a transverse wave |
| compression | Part of a compression wave were the particles are close together |
| refraction | Part of a compression wave were the particles are far apart |
