Transcript Ch. 4, Sect 1 Notes Light and Color

Ch. 4, Sect 1 Notes
Light and Color
Week 8
When Light Strikes an Object
 When light strikes an object, the light can be
___REFLECTED___, ___TRANSMITTED__, or __ABSORBED__.
 Most materials can be classified as ___TRANSPARENT__,
___TRANSLUCENT___, or ____OPAQUE____.
Transparent Materials
 A transparent material transmits ___MOST__ of the light that
strikes it.
 The light passes __RIGHT___ through ___WITHOUT__ being
scattered
 What are 2 examples of transparent: ____CLEAR GLASS___
and _____AIR___, ____WATER_________
Translucent Materials
 A Translucent material ___SCATTERS__ light as it passes
through.
 You can see something through the material, however it is
____BLURRED__.
 What are 2 examples of translucent: ___WAX PAPER____ and
___FROSTED GLASS___
Opaque Materials
 An opaque material __REFLECTS___ or ____ABSORBS____ all of
the light that strikes it.
 You __CANNOT___ see through opaque materials.
 What are 2 examples of opaque: ___WOOD_____ and
____METAL____
Pygmy Marmoset
The Color of Objects
 The color of any object depends on the ____MATERIAL___ of
the object is made of and the ___COLOR__ of light striking
the object.
Color of Opaque Object
 Every opaque object ___ABSORBS___ some wavelengths of
light and ___REFLECTS___ others.
 The color of an opaque object is the color of the light it
__REFLECTED____.
 In red light a red apple looks __RED____.
 In Green a red apple looks ___BLACK_____.
 In red light a green leaf looks____BLACK___.
Transparent and Translucent Objects
 The color of a transparent or translucent object is the color
of the light it ___TRANSMITS__.
 Transparent or translucent materials are used to make color
__FILTERS____.
 When you look at an object through a color filter, the color
of the object may appear __DIFFERENT__.
 2 example of a color filter: __SUNGLASSES____ and
____STAINED GLASS___
Combining Colors
 Colors that can combine to make any other color are called
___PRIMARY___ __COLORS__.
 2 primary colors combine in equal amounts to produce a
_____SECONDARY______ ___COLOR__.
Mixing Colors of Light
 The primary colors of light are ___RED____, ___GREEN____,
and ___BLUE____.
 When all 3 colors of light are mixed equally it will produce
___WHITE___ light.
 The secondary colors of light are ____YELLOW____,
____MAGENTA___, and ___CYAN___.
 Any 2 colors that combine to form white light are called
_____COMPLEMENTARY____ ___COLORS____.
 1 example showing the mixing of color light is:
____TELEVISION_____
Mixing Pigments
 Colored substances that are used to color other materials
are called ___PIGMENTS____.
 As pigments are added together, ___FEWER__ colors of light
are __REFLECTED__ and more are ___ABSORBED__.
 The 3 primary colors of pigments: _____YELLOW___,
___MAGENTA____, ___CYAN___
 Combine all 3 primary colors of pigment and you will get
____BLACK__.
 The secondary colors of pigments are: __RED___,
_____BLUE___, and __GREEN_____