3. Don’t Forget... Contestants

4. …Always phrase your answers in the form of a question!

5. Hands on your buzzers, its...

6. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

7. What is a …? Colour My World`for $100 This is the distance from one place in a wave to the next similar place on the wave Y es NO

8. Back to Game Wavelength

9. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

10. What is …? Colour My World for $200 Y es NO This is the wave height from the rest position of the wave to the crest or the wave depth from the rest position to the trough.

11. Amplitude Back to Game

12. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

13. This is the mathematical formula which is used to determine the velocity of a particular wavelength of light. What is a …? Colour My World for $300 Y es NO

14. Good Answer! Back to Game Velocity = Frequency X Wavelength

15. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

16. These are the six (6) main colours which comprise the visible component of the spectrum. What are …? Colour Mr World for $400 Y es NO

17. 1- Red 2- Orange 3- Yellow 4- Green 5- Blue 6- Violet

18. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

19. What are …? Colour My World for $500 Y es NO Based on the Additive Theory of Light, these are the three secondary colours.

20. Back to Game Magenta, Yellow and Cyan

21. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

22. This is the entire range of wavelengths of light including the visible components What is the …? Light This for $100 Y es NO

23. Back to Game Electromagnetic Spectrum

24. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

25. What are…? Light This for $200 Y es NO These carry more energy than visible light and therefore have a shorter wavelength and higher frequency than visible light

26. Ultra Violet Rays Back to Game

27. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

28. What is the …? Light This for $300 Y es NO This model helps to explain how light behaves.

29. Wave Model of Light Back to Game

30. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

31. What is the…? Light This for $400 Y es NO According to this,… coloured matter selectively absorbs different colours or wavelengths of light.

32. Subtractive Theory of Light Back to Game

33. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

34. What is …? Light This for $500 Y es NO Some algae, jellyfish, insects, crustaceans, bacteria, earthworms, and fungi produce light by this method

35. Bioluminescence Back to Game

36. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

37. What is a …? Only the Shadow Knows for $100 Y es NO This is an electroluminescent light source made out of a material called a semiconductor.

38. Back to Game Light-Emitting Diode (LED)

39. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

41. Only the Shadow Knows for $400 Y es NO Drawing Question: Draw and label the following shadow created by a ray box light source

42. Ray Box Object

43. Back to Game Only the Shadow Knows for $400 Umbra Penumbra Ray Box Object

44. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

45. What is …? Only the Shadow Knows for $300. Y es NO This occurs when light rays reflect off a rough or uneven surface and they do not remain parallel but are scattered in different directions.

46. Back to Game Diffuse Reflection

47. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

48. What is…? Only the Shadow Knowsfor $400 Y es NO This is The Law of Refection

49. Back to Game When light reflects off a surface, the angle of incidence is always equal to the angle of reflection.

50. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

51. What are…? Only the Shadow Knows for $500 Y es NO Drawing question: Draw a ray diagram which shows the final position of the image using a concave mirror

52. f

53. f Only the Shadow Knows for $500

54. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

55. What is…? Mirror Image for $100 Y es NO This occurs when a object is placed at the focal point of a concave mirror.

56. f No Image

57. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

58. What are…? Mirror Image for $200 Y es NO This is the kind of image produced using a concave mirror when the image is inside the focal point

59. f Virtual

60. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

61. What are …? Mirror Image for $300 Y es NO These are practical examples of concave mirrors. Name two (2)

62. Back to Game Flashlights, telescopes, cosmetic mirrors and headlights

63. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

64. What is the…? Mirror Image for $400 Y es NO These are the two formuli used to determine the magnification of an image

65. Back to Game Magnification =Image height = Image distance Object height Object distance

66. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

67. Mirror Image for $500 Y es NO Drawing Question: Complete the following diagram for a convex mirror showing the final position of the image relative to the mirror.

68. f

69. f Virtual, smaller, upright

70. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

71. What is …? Refraction Action for $100 Y es NO This is the formula used to determine the index of refraction for some unknown material.

72. Back to Game Index of Refraction = Speed of light in a vacum__ Speed of light in the material

73. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

74. What is…? Refraction Action for $200 Y es NO This is Snell’s Law

75. Back to Game

76. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

77. What is…? Refraction Action for $300 Y es NO This occurs when light reflects completely off the inside wall of a denser medium (higher index of refraction) rather than passing through the wall into a less dense medium (lower index of refraction).

78. Total Internal Refection Back to Game

79. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

80. What is…? Refraction Action for $400 Y es NO This type of lens causes the converging effect of the light

81. Convex lens Back to Game

82. 500 100 200 300 100 300 200 300 200 100 200 500 300 200 100 400 Colour My World Light This! Mirror Image Refraction Action Only the Shadow Knows

83. Refraction Action for $500 Y es NO Drawing question: Complete the following image.

84. f f Refraction Action for $500

85. f f

87. FINAL JEOPARDY A converging lens is placed 12 cm from a wall chart. The focal length of the lens is 15 cm. What will the image look like??

88. ff Larger, upright and virtual

89. 1 = 1 + 1 f di do 1 = 1 + 1 15 di 12 4 = 1 + 5 60 di 60 -1 = 1 60 di di = -60 cm Solution