Science Light and Color
complementary colors
any 2 colors of light that when mixed together in equal intensities produce white
combining the three primary colors of pigments in equal amounts produces
black
which color crayon absorbs all wavelengths of light
black
mixing together 2 or 3 primary colors of light with varying degrees of __________________ can produce a wide range of colors
intensity
what color would the blue crayon be if a green light were shined on it
it would turn black because green light is being absorbed, and there is no more blue light shining on it
red+blue
magenta
As pigments are added together...
more colors of light are absorbed
does color reside in an object?
no, it depends on the light that shines on the object
for light, what are the three primary colors
red, blue, and green
secondary colors of pigments
red, green, blue
when light strikes an object, the light can be
reflected, transmitted, or absorbed
the color of an opaque object is the color of the light it
reflects
absorption
the transfer of energy by a wave to the medium it is traveling through
what is different about the wavelengths absorbed by the green crayon and the wavelength absorbed by the red crayon?
they reflect or absorb different colors
primary colors
three colors that combine to make any other color
the color of a transparent or translucent object is the color of the light it __________________
transmits
examples of transparent objects
water, air, clear glass
examples of translucent
wax paper, frosted glass
green+magenta
white
red+cyan
white
red+green+blue
white
examples of opaque
wood, metals
red+green
yellow
characteristics of opaque
you cannot see through it
Blue glass appears blue because
It transmits blue and absorbs all other colors
opaque
a material that reflects or absorbs all of the light that strikes it
the color of an apple (opaque) appears to be also dependent on the _________ of the light that strikes it
color
green+blue
cyan
which crayon would reflect only red wavelengths of light?
red
what color would the white crayon be if a red light were shined on it
red, because white reflects all colors so by placing a red light on it, it would reflect more of the red
transmission
the passage of light through an object
blue+yellow
white
secondary colors of light
yellow, magenta, cyan
characteristics of transparent objects
you can clearly see what is on the other side
characteristics of translucent materials
you can see something behind it but the details are blurred
transparent
a material that allows light to pass through (be transmitted) without being scattered
translucent
a material that scatters the light that passes through it
what do pigments do with oclors
absorb some and reflect others
opaque objects do what with wavelengths
absorb some wavelengths of light and reflect others
pigments
colored substances found in inks, paints, and dyes used to color other materials
3 primary colors of pigments
cyan, magenta, yellow
secondary colors
formed from combining two primary colors in equal amounts
