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Light.

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Presentation on theme: "Light."— Presentation transcript:

1 Light

2 a range of energy made of waves that differ in frequencies

3 Electromagnetic spectrum

4 the part of the spectrum that humans can see

5 Visible light

6 theses waves pass through matter more easily (x-ray)

7 High frequency / High energy

8 Which light waves are not visible
Which light waves are not visible? Radio waves Microwaves Gamma Rays Ultraviolet Rays

9 None of these are visible

10 a wave in which the vibration of energy is across the direction forming an S shape

11 transverse

12 this is how light waves are different from sound waves

13 Light does not need a medium

14 Why can we see light in outer space?

15 Light does not need a medium

16 three things that can happen when light hits an object

17 Pass through Reflect Absorb

18 These absorb more light

19 Dark colors

20 the bouncing of light from a surface

21 reflection

22 these surfaces scatter light

23 uneven

24 these surfaces reflect light in a predictable pattern

25 smooth

26 the bending of light as it moves from one material to another, such as from air to water

27 refraction

28 Why does a part of a pencil under water look broken?

29 The light changes speed as it moves through air, then glass, then water

30 materials that allow some light to pass through, but also scatter some of the light (frosted light bulb)

31 translucent

32 Materials that allow all light to pass through

33 transparent

34 absorbs or reflects all the light that strikes it (metal)

35 opaque

36 an object that can change the direction of a light, causing the colors to separate as they leave it

37 prism

38 something that is this color reflects red light waves and absorbs the other colors

39 red

40 this color reflects all the colors in the light

41 white

42 this color absorbs all the light waves

43 black

44 When a rainbow forms, this is the prism

45 raindrops

46 What is a name that can help you remember the colors in a rainbow, in order?

47 Roy G. Biv Red, Orange, Yellow, Green, Blue, Indigo, Violet

48 this color bends the least

49 red

50 this color bends the most

51 violet

52 curved, transparent object that refracts light

53 lens

54 lens that is thicker in the middle, which makes light waves come together and makes objects appear larger and sometimes upside down

55 Crosses and makes an X Convex lens

56 lens that is thicker at the edges, which makes the light waves spread out and makes objects appear smaller and always upright

57 Light goes in the cave Concave lens

58 Why does an image flip upside down in a convex lens?

59 The light rays cross.

60 Light moves through which part of a lens Thicker part or Thinner part

61 this part of your eye is a convex lens

62 lens

63 this is what a person’s vision is when their eyeball is too long

64 nearsighted

65 this is what a person’s vision is when their eyeball is too short

66 farsighted

67 What causes eyeballs to change shape?

68 Muscle movement

69 Why does white light look like a rainbow when it passes through a prism?

70 The prism separates the component colors.

71 Through which does light travel the fastest? Air Glass Water

72 Air

73 A convex lens makes things look Bigger Or Smaller

74 Bigger

75 What reflects the most color Red Or White

76 White

77 A concave lens makes things look Bigger Or Smaller

78 smaller

79 How do light waves travel? Straighter Or More wavy

80 Straighter

81 What travels faster? Light Or Sound

82 Light

83 Why does light travel faster than sound?

84 Light does not disturb molecules or compress them.

85 What does light carry?

86 energy

87 How long does it take for sunlight to reach the earth?

88 8 minutes


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