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Chapter 28: Color Questions
Chapter 28: Color Questions
34
Physics
11th Grade
01/07/2012

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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
additive
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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