Chapter 18.4 Color Reading Comprehension

Based on the text, what is the primary reason an object appears a specific color to the human eye?

• The object generates its own light through chemical reactions.

• The object reflects specific wavelengths of light while absorbing others.

• The object refracts white light into a rainbow inside its surface.

• The object filters out white light and converts it into pigment.

How does the behavior of a black t-shirt in sunlight differ from that of a white sheet of paper?

• The black t-shirt reflects all colors, while the paper absorbs all colors.

• The black t-shirt refracts light, while the paper reflects light.

• The black t-shirt absorbs almost all wavelengths, while the paper reflects all wavelengths.

• The black t-shirt creates additive color, while the paper creates subtractive color.

Which of the following best explains why the mixing of light is called "additive color mixing"?

• Adding more colors of light increases the amount of light reflected by an object.

• Adding more colors of light results in a darker, more saturated color.

• Adding more colors of light increases the total brightness until white light is formed.

• Adding more colors of light subtracts wavelengths from the visible spectrum.

If a technician in a theater wants to create yellow light on stage using only primary colors of light, what should they do?

• Mix Red and Blue light.

• Mix Green and Blue light.

• Mix Red and Green light.

• Mix Cyan and Magenta light.

Why does a printer use Cyan, Magenta, and Yellow (CMY) instead of Red, Green, and Blue (RGB) to produce colored images on paper?

• Paper reflects light, so the ink must add wavelengths to the surface.

• Ink acts as a pigment that subtracts wavelengths from the white light hitting the paper.

• CMY colors are brighter than RGB colors when viewed on a flat surface.

• Printers use additive mixing to ensure the image appears clear under sunlight.

Which of the following is a secondary color of light produced by mixing Green and Blue?

• Magenta

• Cyan

• Yellow

• Violet

Compare the role of a prism to the role of a raindrop as described in the text.

• Both act as light sources that generate the visible spectrum.

• Both absorb red wavelengths to allow violet light to pass through.

• Both refract light to separate white light into its component colors.

• Both use subtractive mixing to create a rainbow effect.

Analyze why a sunset appears orange or red based on the behavior of light wavelengths described in the material.

• The atmosphere absorbs red light, leaving only blue light to be seen.

• Short wavelengths like blue are scattered away, leaving the longer red wavelengths to reach the eye.

• The sun changes its physical temperature, emitting only red light in the evening.

• The atmosphere acts as a pigment, subtractively mixing blue and yellow to create red.

In the context of subtractive color mixing, what is the result of mixing Magenta and Yellow pigments?

• Red

• Green

• Blue

• Black

Which set of colors are considered complementary colors of light?

• Red and Green

• Blue and Yellow

• Magenta and Cyan

• Red and Blue