| A | B |
|---|
| Transparent | light passes through unaffected |
| Translucent | light passes through but gets scattered |
| Opaque | light cannot pass through |
| Reflection | bouncing off a surface |
| Image | where light looks like it comes from |
| Angle of incidence | angle for a ray before it hits a surface |
| Angle of reflection | angle for a ray after it reflects off a mirror |
| Refraction | bending of light when it goes into or out of something transparent |
| Angle of refraction | angle of a ray after it crosses a boundary in a transparent material |
| Ray | line that shows what light does |
| Red Blue Green | primary colors for additive mixing with light |
| Cyan Magenta Yellow | primary colors for subtractive mixing |
| Primary colors | colors that can be mixed to make other colors |
| Spectrum | Range of colors |
| ROYGBIV | Order of colors in a spectrum |
