| A | B |
|---|
| E/M Spectrum | light from different frequencies |
| E/M wave | Red, yellow, orange blue |
| Infrared | electromagnetic waves of frequencies lower than the red of visible light |
| Light year | The distance light travels in a vacuum for one year |
| Opaque | materials that absorb light without reemision |
| Penumbra | Partial shadow |
| Photon | a particle that travels only at the speed of light |
| Polarization | The aligning of vibrations in a transverse wave |
| Ray | a thin beam of light |
| Shadow | shaded regions |
| Tranparent | you can see through it |
| Ultra- violet | Waves of frequencies higher than those of violet light |
| Umbra | the darkest part of a shadow |
| Color | photons with different frequencies |
| Spectrum | the spread of colors that are visible |
| Additive mixing | you take the colors and add them |
| Primary colors of light | Red, green, and blue |
| Pigments/ Dyes | A material that selectively absorbs colored light |
| Subtractive mixing | you have them all but you take one out |
| Primary colors of pain | yellow, red, blue |
| White | all colors |
| Atom | the smalles particle of an element |
| Absorbed | brought into the atom |
