Question 1

Which becomes warmer in sunlight, sunglasses or clear reading glasses?

Accepted Answer

A) sunglasses. 
B) reading glasses. 
C) both 
D) neither 
A) sunglasses. 
B) reading glasses. 
C) both 
D) neither

Question 2

The yellow clothes of a stage performer appear black when illuminated by light that is

Accepted Answer

A) magenta plus cyan. 
B) blue. 
C) both 
D) neither 
A) magenta plus cyan. 
B) blue. 
C) both 
D) neither

Question 3

The color humans are most sensitive to is

Accepted Answer

A) red. 
B) orange. 
C) yellow-green. 
D) green-blue. 
E) violet. 
A) red. 
B) orange. 
C) yellow-green. 
D) green-blue. 
E) violet.

Question 4

If you walk at a constant pace across a room of known length, your walking speed is the room length divided by the time to cross the room. Now suppose you repeat your walk but briefly stop along the way to interact with people sitting along your path. What effect does this have on your average speed across the room? How is this analogous to light passing through glass? In what way is it not analogous?

Accepted Answer

When you walk across the room and pause

Question 5

Why are clouds white?

Accepted Answer

Clouds are composed of a wide variety of

Question 6

The brightest color emitted by the Sun is

Accepted Answer

A) red. 
B) orange. 
C) yellow-green. 
D) green-blue. 
E) violet. 
A) red. 
B) orange. 
C) yellow-green. 
D) green-blue. 
E) violet.

Question 7

An electron vibrating to and fro 1000 times per second generates an electromagnetic wave having a

Accepted Answer

A) period of 1000 s. 
B) speed of 1000 m/s. 
C) wavelength of 1000 m. 
D) frequency of 1000 Hz. 
A) period of 1000 s. 
B) speed of 1000 m/s. 
C) wavelength of 1000 m. 
D) frequency of 1000 Hz.

Question 8

An object having no real color may be

Accepted Answer

A) white. 
B) gray. 
C) black. 
D) any of the above 
A) white. 
B) gray. 
C) black. 
D) any of the above

Question 9

The reason that a surface appears darker when wet has to do with

Accepted Answer

A) the darkness of liquids. 
B) conversion of light to lower frequencies. 
C) absorption of light re-reflecting inside the wet region. 
A) the darkness of liquids. 
B) conversion of light to lower frequencies. 
C) absorption of light re-reflecting inside the wet region.

Question 10

Glass is opaque to light with wave frequencies that

Accepted Answer

A) match its natural frequencies. 
B) are below its natural frequencies. 
C) both 
D) neither 
A) match its natural frequencies. 
B) are below its natural frequencies. 
C) both 
D) neither

Question 11

Consider light energy that is momentarily absorbed in glass and then reemitted. Relative to the absorbed light, the frequency of the reemitted light is

Accepted Answer

A) less. 
B) the same. 
C) more. 
A) less. 
B) the same. 
C) more.

Question 12

Which interacts more with light of relatively high frequencies?

Accepted Answer

A) large particles 
B) small particles 
C) both the same 
A) large particles 
B) small particles 
C) both the same

Question 13

Light shines on a pane of green glass and a pane of clear glass. The temperature will be higher in the

Accepted Answer

A) clear glass. 
B) green glass. 
C) neither 
A) clear glass. 
B) green glass. 
C) neither

Question 14

A pair of plane mirrors are placed at right angles to each other. A coin placed close to the mirrors has at most

Accepted Answer

A) 2 images. 
B) 3 images. 
C) 4 images. 
D) more than 4 images. 
A) 2 images. 
B) 3 images. 
C) 4 images. 
D) more than 4 images.

Question 15

If you wish to spear a small blue fish with a red laser beam, you should compensate for refraction and aim your laser

Accepted Answer

A) directly at the sighted fish. 
B) above the sighted fish. 
C) below the sighted fish. 
A) directly at the sighted fish. 
B) above the sighted fish. 
C) below the sighted fish.

Question 16

The inks used in printing the full-color photos in this book are

Accepted Answer

A) red, green, and blue. 
B) red, green, blue, and black. 
C) magenta, cyan, and yellow. 
D) magenta, cyan, yellow, and black. 
E) none of the above 
A) red, green, and blue. 
B) red, green, blue, and black. 
C) magenta, cyan, and yellow. 
D) magenta, cyan, yellow, and black. 
E) none of the above

Question 17

The three colors that comprise the image on a TV screen are

Accepted Answer

A) red, blue, and yellow. 
B) red, blue, and green. 
C) yellow, blue, and green. 
D) magenta, cyan, and yellow. 
E) red, green, and yellow. 
A) red, blue, and yellow. 
B) red, blue, and green. 
C) yellow, blue, and green. 
D) magenta, cyan, and yellow. 
E) red, green, and yellow.

Question 18

Relative to ultraviolet waves, the wavelength of infrared waves is

Accepted Answer

A) shorter. 
B) longer. 
C) the same. 
A) shorter. 
B) longer. 
C) the same.

Question 19

A sound wave and a light wave have identical

Accepted Answer

A) speeds. 
B) wavelengths. 
C) frequencies. 
D) all of the above 
E) none of the above 
A) speeds. 
B) wavelengths. 
C) frequencies. 
D) all of the above 
E) none of the above

Question 20

Compared with the photons of light that shines on glass, the emerging photons are

Accepted Answer

A) the same. 
B) different though identical. 
C) a mixture of being the same and different. 
A) the same. 
B) different though identical. 
C) a mixture of being the same and different.

Exam 11: Light

Which becomes warmer in sunlight, sunglasses or clear reading glasses?

The yellow clothes of a stage performer appear black when illuminated by light that is

The color humans are most sensitive to is

Why are clouds white?

The brightest color emitted by the Sun is

An electron vibrating to and fro 1000 times per second generates an electromagnetic wave having a

An object having no real color may be

The reason that a surface appears darker when wet has to do with

Glass is opaque to light with wave frequencies that

Consider light energy that is momentarily absorbed in glass and then reemitted. Relative to the absorbed light, the frequency of the reemitted light is

Which interacts more with light of relatively high frequencies?

Light shines on a pane of green glass and a pane of clear glass. The temperature will be higher in the

A pair of plane mirrors are placed at right angles to each other. A coin placed close to the mirrors has at most

If you wish to spear a small blue fish with a red laser beam, you should compensate for refraction and aim your laser

The inks used in printing the full-color photos in this book are

The three colors that comprise the image on a TV screen are

Relative to ultraviolet waves, the wavelength of infrared waves is

A sound wave and a light wave have identical

Compared with the photons of light that shines on glass, the emerging photons are

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

Filters