| A | B |
|---|
| convex lens | converges light rays to a point. |
| amplitude | the height of a transverse wave from rest line to crest. |
| transveres wave | the medium travels at a right angle to the direction of the energy. |
| infrared radiation | also known as heat |
| concave mirror | used behind lights in flashlights and car headlights |
| x-rays | used in medical diagnosis of internal structures |
| ultraviolet radiation | used to kill germs |
| wavelength | the distance from crest to crest and the factor that determines the color of light |
| intensity | the amount of energy in a wave |
| refraction | the bending of light due to a change in speed |
| reflection | the bouncing of light off of a smooth surface |
| diffraction | the bending of light around a barrier |
| coherent light | light made of only one wavelength that doesn't spread |
| incoherent light | light made of many wavelengths that does spread |
| total internal reflection | light reflecting off the inner surface of a transparent material |
| polarized light | light that vibrates all in the same plane |
