| A | B |
| absorption | transfer of light energy to particles of matter |
| reflection | light bouncing off an object |
| diffraction | waves bending aroung barriers or through openings |
| refraction | waves bending as they pass at an angle from one material to another |
| scattering | interaction of light with matter that causes light to change direction |
| constructive interference | two or more waves combining to make one wave with more height |
| destructive interference | two or more waves combining to make one wave with less |
| incidence | arrival of a beam of light at a surface |
| gamma rays | EM waves that can be used to treat cancer |
| ultraviolet light | An EM wave that can cause sunburn |
| infrared waves | EM waves that make whatever they strike feel warmer |
| visible light | light that you can see |
| radio waves | EM waves used to broadcast television signals |
| X rays | EM waves used to see inside suitcases without opening them |
| microwave | EM waves used by cellular phones |
| radiation | the transfer of energy as EM waves |
| electromagnetic waves | changing electric and magnetic fields |
| Earth's major source of energy | EM waves from the sun |
| the color seen when looking at an opaque object | color of light diffracted |
| the color seen when looking through a colored transparent object | color diffracted |