| A | B |
| electromagnetic spectrum | Term that includes all waves of light. |
| radio waves | longest wavelength and lowest frequency |
| microwave | radio wave that we cook with |
| radar | radio detection and ranging |
| MRI | magnectic resonance imaging |
| infrared | slightly longer wavelength than visible light |
| visible light | wavelengths we see as colors |
| prism | used to separate white light into colors |
| filter | blocks out some colors of light |
| radiometer | light windmill |
| spectrometer | separates colors given off by a flowing object |
| ultraviolet rays | slightly shorter wavelength than visible light |
| x-rays | penetrates most matter and used to photograph bones |
| gamma rays | shortest wavelength and highest frequency |
| opaque | light cannot pass through |
| transparent | all light can pass through |
| translucent | some light can pass through |
| reflected | colors visible from an object |
| absorbed | colors not visible from an object |
| plane | flat mirror that produces a virtual image |
| virtual image | right-side up |
| real image | upside down |
| convex | mirror bent away from object produces virtual image |
| concave | mirror bent towards object produces real image |