Presentation on theme: "+ Chapter 2: Section 2 Visible light and Color. + When light strikes an object, it is reflected, transmitted, or absorbed. Light ON Light OFF."— Presentation transcript:
+ Chapter 2: Section 2 Visible light and Color
+ When light strikes an object, it is reflected, transmitted, or absorbed. Light ON Light OFF
+ What is reflecting light? What is absorbing light? What is transmitting light?
+ Transparent materials transmit light. You can see things on the other side of the material.
+ Translucent materials scatter light. Things on the other side of the material look blurry.
+ Opaque material reflects or absorbs all the light that hits it. You can’t see through it.
+ What color is the apple? What color does it REFLECT? What color does it ABSORB?
+ The color of an opaque object is the color of the light it REFLECTS.
+ You see…. The apple only looks red if it REFLECTS red light to your eye.
+ What about Black and white? Black White
+ 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?
+ Remember yesterday’s activity! What did we investigate? What did we find out?
+ What is a prism? A transparent object which reflects and transmits light
+ Wavelength Red shortest Violet longest
+ 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 = ?
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 =?