Question 1

An important feature of red sunsets is the

Accepted Answer

A) scattering of lower frequencies by larger particles in the air. 
B) longer path of air through which sunlight travels. 
C) lower frequencies of light emitted late in the day by the Sun. 
D) absorption effects of the smaller particles in the air. 
A) scattering of lower frequencies by larger particles in the air. 
B) longer path of air through which sunlight travels. 
C) lower frequencies of light emitted late in the day by the Sun. 
D) absorption effects of the smaller particles in the air. B

Question 2

The distance between Earth and the Moon is 3.84 108 m.A pulse of laser light aimed at the Moon that bounces back to Earth undergoes a round-trip time of about

Accepted Answer

A) zero seconds. 
B) less than 1 second. 
C) two and a half seconds. 
D) three seconds. 
A) zero seconds. 
B) less than 1 second. 
C) two and a half seconds. 
D) three seconds. C

Question 3

Refraction causes the bottom of a swimming pool to appear

Accepted Answer

A) deeper. 
B) more shallow. 
C) neither 
A) deeper. 
B) more shallow. 
C) neither B

Question 4

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 5

The amount of light from an incandescent lamp that is transmitted through an ideal Polaroid filter is half,and through a real Polaroid filter is

Accepted Answer

A) less than half. 
B) more than half. 
C) half. 
A) less than half. 
B) more than half. 
C) half.

Question 6

Materials generally become warmer when light is

Accepted Answer

A) absorbed by them. 
B) reflected by them. 
C) transmitted by them. 
D) all of the above 
E) none of the above 
A) absorbed by them. 
B) reflected by them. 
C) transmitted by them. 
D) all of the above 
E) none of the above

Question 7

The twinkling of stars is a result of atmospheric

Accepted Answer

A) reflection. 
B) refraction. 
C) scattering. 
D) dispersion. 
E) aberrations. 
A) reflection. 
B) refraction. 
C) scattering. 
D) dispersion. 
E) aberrations.

Question 8

When white light goes from air into water,the color that refracts the most is

Accepted Answer

A) red. 
B) orange. 
C) green. 
D) violet. 
E) all refract the same amount. 
A) red. 
B) orange. 
C) green. 
D) violet. 
E) all refract the same amount.

Question 9

According to the law of reflection,the incident ray,reflected ray,and normal between them

Accepted Answer

A) lie in the same plane. 
B) may or may not lie in the same plane. 
C) lie in planes that are perpendicular to one another. 
A) lie in the same plane. 
B) may or may not lie in the same plane. 
C) lie in planes that are perpendicular to one another.

Question 10

Humans see best in the yellow-green region of the spectrum.So the efficiency of sodium yellow-green lamps that illuminate highways is

Accepted Answer

A) higher. 
B) lower. 
C) not affected. 
A) higher. 
B) lower. 
C) not affected.

Question 11

The solar radiation curve is a graph of

Accepted Answer

A) colors of sunlight versus their frequencies. 
B) colors of sunlight versus their wavelengths. 
C) the path of the Sun about Earth. 
D) brightness versus frequency. 
E) intensity versus distance from the Sun. 
A) colors of sunlight versus their frequencies. 
B) colors of sunlight versus their wavelengths. 
C) the path of the Sun about Earth. 
D) brightness versus frequency. 
E) intensity versus distance from the Sun.

Question 12

Different colors of light correspond to different light

Accepted Answer

A) velocities. 
B) intensities. 
C) polarities. 
D) frequencies. 
E) none of the above 
A) velocities. 
B) intensities. 
C) polarities. 
D) frequencies. 
E) none of the above

Question 13

A pane of red glass transmits primarily

Accepted Answer

A) red light. 
B) the complementary color of red light. 
C) all colors of light. 
A) red light. 
B) the complementary color of red light. 
C) all colors of light.

Question 14

A sheet of red paper will look black when illuminated with

Accepted Answer

A) red light. 
B) yellow light. 
C) magenta light. 
D) cyan light. 
E) none of the above 
A) red light. 
B) yellow light. 
C) magenta light. 
D) cyan light. 
E) none of the above

Question 15

Rainbows are not usually seen as complete circles because

Accepted Answer

A) the ground is usually in the way. 
B) they are actually elliptical. 
C) they have no bottom part. 
D) raindrops are not perfectly round. 
E) rainbows are arched shaped. 
A) the ground is usually in the way. 
B) they are actually elliptical. 
C) they have no bottom part. 
D) raindrops are not perfectly round. 
E) rainbows are arched shaped.

Question 16

Non-reflected ultraviolet light that shines on a pane of transparent glass

Accepted Answer

A) produces a chain of absorptions and re-emissions through the glass. 
B) transforms to thermal energy. 
C) is mostly reflected. 
A) produces a chain of absorptions and re-emissions through the glass. 
B) transforms to thermal energy. 
C) is mostly reflected.

Question 17

If sunlight were green instead of white,the most comfortable color to wear on a hot day would be

Accepted Answer

A) magenta. 
B) yellow. 
C) green. 
D) blue. 
E) violet. 
A) magenta. 
B) yellow. 
C) green. 
D) blue. 
E) violet.

Question 18

Relative to radio waves,the velocity of visible light waves in a vacuum is

Accepted Answer

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

Question 19

What accounts for the additional few minutes of sunlight we experience daily,before sunrise and after sunset?

Accepted Answer

Atmospheric refraction adds to daylight

Question 20

A golf ball illuminate by only red light casts a colorless shadow.If instead it is also illuminated by a close-by green light source,the non-overlapping shadows will be

Accepted Answer

A) green and red. 
B) cyan and magenta. 
C) white. 
D) none of the above 
A) green and red. 
B) cyan and magenta. 
C) white. 
D) none of the above

Exam 11: Light

An important feature of red sunsets is the

The distance between Earth and the Moon is 3.84 108 m.A pulse of laser light aimed at the Moon that bounces back to Earth undergoes a round-trip time of about

Refraction causes the bottom of a swimming pool to appear

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

The amount of light from an incandescent lamp that is transmitted through an ideal Polaroid filter is half,and through a real Polaroid filter is

Materials generally become warmer when light is

The twinkling of stars is a result of atmospheric

When white light goes from air into water,the color that refracts the most is

According to the law of reflection,the incident ray,reflected ray,and normal between them

Humans see best in the yellow-green region of the spectrum.So the efficiency of sodium yellow-green lamps that illuminate highways is

The solar radiation curve is a graph of

Different colors of light correspond to different light

A pane of red glass transmits primarily

A sheet of red paper will look black when illuminated with

Rainbows are not usually seen as complete circles because

Non-reflected ultraviolet light that shines on a pane of transparent glass

If sunlight were green instead of white,the most comfortable color to wear on a hot day would be

Relative to radio waves,the velocity of visible light waves in a vacuum is

What accounts for the additional few minutes of sunlight we experience daily,before sunrise and after sunset?

A golf ball illuminate by only red light casts a colorless shadow.If instead it is also illuminated by a close-by green light source,the non-overlapping shadows will be

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 Time - Reading 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

The distance between Earth and the Moon is 3.84 10⁸ m.A pulse of laser light aimed at the Moon that bounces back to Earth undergoes a round-trip time of about