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Chapter 22 Terms
Airik Evans
| Question | Answer |
|---|---|
| LIGHT UNIT TERMS | |
| 1. Radiation | Emission of energy in the form of EM waves |
| 2. Particle – wave theory of light | |
| 3. Electromagnetic Spectrum | The entire ranges of EM waves |
| 4. Radio Waves | Cover wide ranges of EM spectrum. Low Frequency; Long Wavelength |
| 5. AM Radio | Amplitude Modulation |
| 6. FM Radio | Frequency Modulation |
| 7. Ionosphere | |
| 8. Microwaves | Shorter Wavelengths than radio waves; Higher Frequency |
| 9. Radar | Radio Detection and ranging |
| 10. Infrared Waves | Shorter Wavelengths than microwaves; Higher Frequency |
| 11. Visible Light | Narrow ranges of wavelengths that humans can see |
| 12. Ultraviolet Light | Shorter Wavelengths than Visible light; Higher Frequency; Produced by Sun |
| 13. X-Rays | Carry much energy and can penetrate a variety of materials |
| 14. Gamma Rays | Carry large amounts of energy and can penetrate materials very easily |
| 15. Law of Reflection | states that the angle of incidence is equal to the angle of reflection |
| 16. Regular Reflection | When light beams are reflected at the same angle |
| 17. Diffuse reflection | When light beams reflect at many different angles |
| 18. Absorption | The transfer of energy carried by light waves to particles of matter |
| 19. Scattering | The release of light energy by particles of matter that have absorbed energy |
| 20. Transmission | the passing of light through matter |
| 21. Transparent | matter through which visible light is easily transmitted |
| 22. Opaque | Matter that does no transmit any light |
| 23. Translucent | matter transmits light but also scatters the light as it passes through |
| 24. Primary Colors of Light | Red, Blue, Green |
| 25. Pigment | a material that gives a substance its color by absorbing some colors of light and reflection others |
| 26. Primary Pigments | Yellow, Cyan, Magenta |
| 27. Prism | A glass piece often made of glass used to disperse light and break it up into a spectrum |
| 28. Plane Mirror | a mirror with a flat surface |
| 29. Concave Mirror | Mirrors that curve inward |
| 30. Convex Mirror | A mirror that curves outward |
| 31. Virtual Image | an image through which light does not actually travel |
| 32. Real Image | an image through which light passes |
| 33. Concave Lens | A lens that is thinner in the middle than the edges |
| 34. Convex Lens | A lens that is thicker in the middle than the edges |
| 35. Retina | The back surface of the eye |
| 36. Nearsightedness | occurs when the eye is too long and the lens focuses light in front of the retina |
| 37. Farsightedness | occurs when the eye is too short and the lens focuses behind the retina |
| 38. Colorblindness | occurs when the cones in the retina do not receive the right instructions |
| 39. Rods | |
| 40. Cones | |
| 41. Laser | a device that produces intense light of only one color or wavelength |
| 42. Hologram | a piece of film on which an interference pattern produces three-dimensional image of an object |
| 43. Maiman – created the first laser | |
| 44. Dennis Gaber – invented hologram | |
| 45. Luminous – Objects that produce visible light | |
| 46. Illuminated – a visible object that is not a light source |
Created by:
PhySciLewis1
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