1. Chapter 2: Section 2 Visible light and Color

2. When light strikes an object, it is reflected, transmitted, or absorbed.
Light ON
Light OFF

3. What is reflecting light. What is absorbing light
What is reflecting light? What is absorbing light? What is transmitting light?

4. Transparent materials transmit light
Transparent materials transmit light. You can see things on the other side of the material.

5. Translucent materials scatter light
Translucent materials scatter light. Things on the other side of the material look blurry.

6. Opaque material reflects or absorbs all the light that hits it
Opaque material reflects or absorbs all the light that hits it. You can’t see through it.

7. What color does it REFLECT? What color does it ABSORB?
What color is the apple?
What color does it REFLECT? What color does it ABSORB?

8. The color of an opaque object is the color of the light it REFLECTS.

9. The apple only looks red if it REFLECTS red light to your eye.
You see….
The apple only looks red if it REFLECTS red light to your eye.

12. What about Black and white?

13. Why can’t you see well at night?
There is very little light to reflect off objects and back to your eye. Only your most sensitive light-gathering cells are at work at night. What are they?

14. Remember yesterday’s activity!
What did we investigate?
What did we find out?

15. What is a prism?
A transparent object which reflects and transmits light

16. Visible Light

17. Wavelength
Red shortest
Violet longest

18. Combining Colors- Light
Key Concept: When combined in equal amounts, the three primary colors of light produce white light.
Primary colors: Red, Green, Blue
Secondary colors: Yellow, cyan, Magenta
Add up the primary colors = ?

19. Combining Colors- Pigments
The primary colors of pigments combine in equal amounts to form black.
Primary pigments: Magenta, Cyan, Yellow
Secondary pigments:
red, green, and blue
Add primary pigments =?