1. What title would you give to each droodle?
Warm-up Exercise
What title would you give to each droodle?

3. Almost bald man with a split-end.

5. Street lines painted by someone who had the hiccups.

8. Light and Color
Type of matter in an object determines the amount of light it absorbs and reflects.

9. Light and Color
Opaque materials – absorbs or reflects all light, you can not see through them
Transparent materials – allow light to pass through, you can see through them
Translucent materials – allow some of the light to pass through; you can not clearly see objects through them

10. Red
Orange
Yellow
Green
Blue
Indigo
Violet
Color Spectrum
Light waves in the visible spectrum arranged from longest wavelength to shortest wavelength.

11. Electromagnetic Spectrum

12. Seeing Color
The color appearance of any object is due to the wavelengths of light that are reflected from the object and picked up by our eyes.

13. Black objects absorb all the colors of the visible spectrum.
Seeing Color Examples
Black objects absorb all the colors of the visible spectrum.

14. Seeing Color Examples
2. Blue jeans appear to be blue because all the colors except blue are absorbed and blue is reflected to your eyes

15. Seeing Color Examples
3. White objects appear white because they reflect all the colors of the visible spectrum.

16. Primary Colors of Light
Even though the visible spectrum consists of seven different colors, all of the color seen by the human eye is a mixture of the three primary colors: red, green, and blue.

17. Primary Colors of Light
Red, green, and blue are the primary additive colors. When mixed together in different proportions, you can make just about any color. When mixed in equal proportions (added together), the three primary colors yield white light.

18. Primary Colors of Light
A pigment is a colored material that absorbs some colors and reflects others. The primary pigments are:
1. magenta
2. yellow
3. cyan

19. Primary Colors of Light
Cyan, Magenta, and Yellow are the primary subtractive colors. These colors are combined to produce print media and photographic film. When the subtractive primary colors magenta, cyan, and yellow are added together, they form the color black.

20. HOW THE HUMAN EYE
SEES COLOR

21. HOW THE HUMAN EYE SEES COLOR
When light enters your eye, it is focused on a special “screen” at the back of the eyeball. This screen is called the retina.

22. HOW THE HUMAN EYE SEES COLOR
It is made up of two different types of nerves cells, rods and cones. The rods are sensitive to dim light and are useful for night vision. Cones are useful during the daylight and they help to distinguish color because they absorb a different range of wavelengths.

23. HOW THE HUMAN EYE SEES COLOR There are three types of cones:
1. Red cones – absorb mostly red and yellow
2. Green cones – absorb mostly yellow and green
3. Blue cones – absorb mostly blue and violet

24. HOW THE HUMAN EYE SEES COLOR Examples:
When you look at white T-shirt, all three cones are stimulated
When you look at blue jeans, only the blue cone is stimulated
When you look at a yellow shirt, both red cones and green cones are stimulated

25. HOW THE HUMAN EYE SEES COLOR
Color blindness occurs because one or more sets of cones do not function correctly.
Try these tests.

26. Pop Tart Review
Review Activity

27. Get ready for the sequel!
Pop Tart Review
Get ready for the sequel!

28. What produces electromagnetic radiation?
Pop Tart Review
What produces electromagnetic radiation?

29. What type of wave is electromagnetic radiation?
Pop Tart Review
What type of wave is electromagnetic radiation?

30. Name a wave that can travel faster than electromagnetic radiation?
Pop Tart Review
Name a wave that can travel faster than electromagnetic radiation?

31. Pop Tart Review
What is a photon?

32. Name the longest electromagnetic wave.
Pop Tart Review
Name the longest electromagnetic wave.

33. Pop Tart Review
What name do we give to all the electromagnetic waves arranged from longest wavelength to shortest wavelength?

34. Name electromagnetic wave used to see a child in a burning house.
Pop Tart Review
Name electromagnetic wave used to see a child in a burning house.

35. Which has more photon energy – a radio wave or an ultraviolet wave?
Pop Tart Review
Which has more photon energy – a radio wave or an ultraviolet wave?

36. Which wave is longer – an infrared wave or an ultraviolet wave?
Pop Tart Review
Which wave is longer – an infrared wave or an ultraviolet wave?

37. What are the primary colors of light?
Pop Tart Review
What are the primary colors of light?

38. Pop Tart Review
What are the names of the special nerve cells in the eye that detect color?

39. Name the subtractive primary colors.
Pop Tart Review
Name the subtractive primary colors.

40. What causes colorblindness?
Pop Tart Review
What causes colorblindness?

41. What causes a fluorescent light to emit visible light?
Pop Tart Review
What causes a fluorescent light to emit visible light?