1. 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Lesson One Lesson Two Lesson Three Lesson Four Lesson Five

2. What is the likeness of an object?

3. Image

4. What is a flat or level surface?

5. Plane

6. In science, what is a statement of a pattern, action, or condition that has been observed so consistently that scientists are convinced it will always happen?

7. Law

8. In a light bulb, What is the metal strip that glows to produce light?

9. Filament

10. What is the form of energy we can see?

11. Light

12. What is a non-human made source of light, such as the sun?

13. Natural Light source

14. What sends out energy in the form of waves or rays?

15. Radiation

16. What is energy transferred or emitted as waves or rays in all directions?

17. Radiant Energy

18. What is a human made source of light?

19. Artificial light source

20. What describes how much energy a surface will receive?

21. Intensity

22. What is an object that can be heated to such a high temperature that it emits visible light?

23. Incandescent source

24. What is the emission of visible light by a hot object?

25. Incandescence

27. What is the process in which high energy, invisible ultraviolet light is absorbed by the particles of an object, which then emits some of this energy as visible light, causing the object to glow?

28. Flouresence

29. What is a source that produces light when exposed to alight of particular wave length?

30. Fluoresent source

31. What is a substance that gives off visible light released after the light energy has been absorbed by certain particles that have stored this energy for a while; the light continues for some time even after the substance is no longer exposed to the light?

32. Phosphorescent source

33. What is the persistent emission of light following exposure to and removal of a source of radiation?

34. Phosphorescence

35. What is the emission of light resulting form chemical reactions and not involving heat?

36. Chemiluminescence

37. What is the chemical reaction that produces particle that give off visible light energy?

38. Chemiluminescent Source

39. What is the emission of light produced by chemical reactions inside the bodies of living creatures?

40. bioluminescence

41. What si an organism that relies on chemical reactions in side its body to produce light?

42. Bioluminecsent Source

43. What is an unit of power equivalent to one joule per second?

44. watt

45. What is a unit of electrical energy; the amount of energy transmitted by one thousand watts of power over a period of one hour?

46. Kilowatt hour

47. What is a presentation of the path of light by using a straight line with an arrow?

48. Ray Diagram

49. What allows some light to pass through it?

50. Translucent

51. What lets no light to pass through?

52. Opaque

53. What gives off its own light?

54. Luminous

55. What is not luminous?

56. Non-luminous

57. What casts back light from a surface?

58. Reflection

59. What is the light that strikes a reflection or fraction material?

60. Incident ray

61. What is the light that is cast back?

62. Reflected ray

63. What is a reference line down perpendicular?

64. Normal

65. In optics, what is the angle between the normal and the incident ray?

66. Angle of incidence

67. In optics, what is the angle between the normal and the reflected ray?

68. Angle of reflection

69. what is a mirror having a flat surface?

70. Plane mirror

71. What are the 2 main predictable behaviors of reflected light?

72. Laws of reflection

73. What is the type of refection that occurs?

74. Diffuse reflection

75. What is the bending g of light when it travels from one medium to another off a rough surface?

76. Refraction

77. In optics, what is the angle between the normal and the refraction ray?

78. Angle of refraction