Chapter 28: Color (Conceptual Physics Exam review)

violet

Although _________light is scattered more than blue light, our eyes see the sky as blue because our eyes are more sensitive to the blue light...

redder

As more high frequencies of light are scattered, the color of the sky progressively becomes ____________.

blue

As the path of sunlight through the atmosphere increases (sunrise/sunset), what color of light is scattered more?

yellow green

Based on the radiation curve shown in your book, what is the brightest portion of the spectrum of sunlight (the color humans see best)?

sizes

Many clouds appear white because they contain water droplets of many ______ which cause many frequencies of light to be scattered. The combined frequencies make the cloud appear white.

a

Red, blue, and green light are known as the... a) primary additive colors b) complementary colors c) rainbow

subtraction

The mixing of pigments, paints, or dyes is known as color mixing by __________?

identify

The spectrum emitted by an element can be used to ________ the element.

true

True of False?? By mixing red, blue, and green light and adjusting the brightness of each, virtually any color can be formed.

true

True or False? Color television produces colors by adding colors of light.

true

True or False? Magenta, yellow, and cyan are the colors used in printing illustrations in full color.

false; subtracting

True or False? Paints and dyes produce color by adding colors.

false; reflects

True or False? The color of a transparent object is determines by the color of light it absorbs.

false; high

True or False? The sky appears blue because particles in the atmosphere scatter low-frequency light.

true

True or False?? At sunset, only lower-frequency light strike Earth.

true

True or False?? Candlelight emits light in the lower frequency range of colors.

false; red, orange, yellow, green, blue, and violet

True or False?? The color of the visible spectrum in the correct order (from longest to shortest wavelength) is violet, indigo, blue, green, yellow, orange, red.

false; differently

True or False?? The mixing of colored paints yields similar results as mixing the same colors of light.

true

True or False?? The smaller the particle in the atmosphere, the higher the frequency of light it scatters.

true

True or False?? Ultraviolet light emits frequencies in the higher frequency range ( blue/ violet)

true

True or False?? Water is transparent to nearly all the frequencies of white light.

false; reflection

True or False?? When an object reemits the light that shines on it, absorption occurs.

false; different

True or False?? When made to emit light, every element emits the same pattern.

False; the absence of light

True or False??? Black is a combination of all colors of light.

b

Two colors of light that when added together produce white are known as... a) primary additive colors b) complementary colors c) rainbow

c

Water molecules absorb certain frequencies of colored light. Pick the letter of the complementary color to the color that is absorbed. (This would be the color that water reflects). a) magenta b) yellow c) cyan d) white

red

What color do water molecules absorb?

cyan

What color does the mixture of green and blue light make?

magenta

What color does the mixture of red and blue light make?

yellow

What color does the mixture of red and green light make?

white light

What color of light is produced when red, blue, and green light of equal brightness overlap?

yellow

What is the complementary color of blue?

magenta

What is the complementary color of green?

cyan

What is the complementary color of red?

reflected; absorbed

When sunlight shines on a piece of blue glass, the glass appears blue because blue light is ________ and other colors are _________.

d

Which is the letter(s) that best describes the light that results when a color is subtracted from white light? a) black b) magenta c) muddy brown d) the complementary color to the subtracted color

a

Which letter best describes the color of light that is scattered the least as it passes through the atmosphere? a) red b) orange c) yellow d) blue

c

Which letter best describes what occurs when many particles larger than oxygen and nitrogen molecules are in the atmosphere... a) The sky appears darker blue. b) the sky appears black. c) The sky appears whitish. d) The sky appears green.

a, b, c

Which letter(s) about Newton's study of color statement are true? a) He studied sunlight. b) He passed sunlight through triangular-shaped pieces of glass. c) He observed that sunlight was broken into a rainbow-like pattern of colors. d) he showed that sunlight is yellow light.

c,d

Which letter(s) about each statement that best explains why a red apple looks red... a) It absorbs red light. b) It transmits red light. c) It reflects red light. d) It absorbs all colors except red.

c

Which letter(s) best describes the color of an opaque object? a) An opaque object is the color it absorbs. b) An opaque object is the color of the light that shines on it. c) An opaque object is the color it reflects. d) An opaque object is the color of white light.

b

Which letter(s) explain what the energy from the light absorbed by a piece of glass does to the glass. a) The energy hardens the glass. b) The energy warms the glass. c) The energy darkens the glass. d) The energy has no effect on the glass.