# Shared Flashcard Set

## Details

Chapter 28: Color Questions
Chapter 28: Color Questions
34
Physics
01/07/2012

Term
 White light is a combination of light of all ____________ ________________.
Definition
 visible frequencies
Term
 Black is the absence of __________.
Definition
 light
Term
 Objects that appear black reflect/absorb all frequencies.
Definition
 absorb
Term
 The ___________ of an object is due to the color of the _________ it reflects (if opaque) or transmits (if transparent)
Definition
 color light
Term
 Light is absorbed/reflected when its frequency matches a natural vibration frequency of electrons in the material illuminated by the light.
Definition
 Light is absorbed
Term
 Color mixing by addition is the mixing of light of different ______________.
Definition
 frequencies
Term
 The eye sees a combination of red, green, and blue light of equal brightness as _______________________.
Definition
 white
Term
 Red, green and blue are the _____________ primary colors.
Definition
Term
 Color mixing by _______________ is the mixing of colored paints or dyes which absorb most frequencies except for the ones that give them their characteristic color.
Definition
 subtraction
Term
 When paints or dyes are mixed, the mixture ____________ all the frequencies each paint or dye absorbs.
Definition
 absorbs
Term
 Magenta, cyan, and yellow are the _______________ primary colors.
Definition
 subtractive
Term
 Scattering of violet and blue frequencies of sunlight in all directions is what gives the sky its _________ _________
Definition
 blue color
Term
 When sunlight travels a long path through the atmosphere, as at dawn or sunset, only the lower frequencies are transmitted (red, orange, yellow) the higher ones are scattered out. What are the highter frequency colors?
Definition
 Blue and violet
Term
 Atoms of each ________________ have characteristic line spectra that can be used to identify the __________.
Definition
 element element
Term
 Who was the first to make a systematic study of color?
Definition
 Isaac Newton
Term
 What did Newton call the spread of colored light that he got by introducing light into a prism?
Definition
 Spectrum
Term
 White light is what is produced by our ______________.
Definition
 Sun
Term
 Are the colors in the spectrum a property of the prism or of the light?
Definition
 The light
Term
 White is the _________________ of all light frequencies.
Definition
 combination
Term
 The material in the glass that selectively absorbs colored light is known as a ______________________
Definition
 pigment
Term
 When green light shines on a red rose, why do the petals look black?
Definition
 The green light contains no red to be reflected by the rose so it appears to have no color at all, so it appears black.
Term
 What color does a ripe banana appear when illuminated with red light?
Definition
 Red
Term
 What color does a ripe banana appear when illuminated with yellow light?
Definition
 Yellow
Term
 What color does a ripe banana appear when illuminated with blue light?
Definition
 Black, A yellow banana doesn't reflect blue.
Term
 What color does white light minus green light appear?
Definition
 Magenta
Term
 Name the three additive primary colors.
Definition
 Red, green, blue
Term
 Define: Complementary colors
Definition
 When two colors are added together to produce white
Term
 If red + green = yellow, what is the complementary color to yellow?
Definition
 Blue
Term
 If blue + green = cyan, what is the complementary color to cyan?
Definition
 Red
Term
 What color does red light plus blue light make?
Definition
 Magenta
Term
 Name the three subtractive primary colors.
Definition
 Yellow, cyan, magenta
Term
 Name the process: To absorb sound or light and re-emit it in all directions.
Definition
 Scattering
Term
 Distant dark mountains are bluish in color. What is the source of the blueness?
Definition
 Very little light from the distant dark mountains reaches you so you see the blueness of the atmosphere between you and the mountains.
Term
 Pattern of distinct lines of color, corresponding to particular wavelengths that are seen in a spectroscope when a hot gas is viewed is called a _______ __________.
Definition
 line spectrum
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