| A | B |
|---|
| concave lens | a lens that is curved inward; bends light outward |
| convex lens | a lens that is curved outward; bends light inward |
| crest | the top of one wavelength |
| electromagnetic spectrum | the full range of electromagnetic waves from longest to shortest (includes radio waves, microwaves, infrared waves, visible light, ultraviolet light, x-rays, and gamma rays) |
| infrared light | invisible light felt as heat |
| laser | (Light Amplification by Stimulated Emission of Radiation)a concentrated beam of light, made of just one type of light |
| light | a form of energy that travels in straight lines from its source in waves (commonly called |
| light waves | are characterized by their wavelengths (Red has the longest, and violet has the shortest.) |
| prism | refracts visible light so that the rays are bent and separated into the colors of the spectrum |
| reflected | light that bounces off an object or surface ( such as a mirror) |
| refracted | light that is bent as its path is changed (such as when light passes through different objects like a lens or water) |
| roygbiv | the colors of white light broken down by wavelengths in order from longest to shortest (red,orange, yellow, green, blue, indigo, violet) |
| translucent | allowing some light to pass through an object (The image will be distorted.) |
| transmitted | light passed through an object |
| transparent | allowing most light to pass through an object |
| trough | the bottom of one wavelength |
| ultraviolet light | invisible light to humans (causes sunburns and suntans) |
| visible spectrum | light that appears white because of different wavelengths traveling together (the light people can see) |
| wavelength | the distance between one crest to another crest or the distance between one trough to another trough |
