Question 1

Troops break step when marching across a bridge to prevent

Accepted Answer

A) interference. 
B) resonance. 
C) wave motion. 
D) frequency distortion. 
A) interference. 
B) resonance. 
C) wave motion. 
D) frequency distortion.

Question 2

When Phil Physiker swings a buzzer over his head in a circle he hears

Accepted Answer

A) a steady hum. 
B) a throbbing hum. 
C) the same Doppler effect that his friends off to the side hear. 
A) a steady hum. 
B) a throbbing hum. 
C) the same Doppler effect that his friends off to the side hear.

Question 3

Resonance can be viewed as forced vibration with the

Accepted Answer

A) least amount of energy input. 
B) maximum amount of energy input. 
C) matching of wave amplitudes. 
D) matching of constructive and destructive interference. 
E) minimum beat frequency. 
A) least amount of energy input. 
B) maximum amount of energy input. 
C) matching of wave amplitudes. 
D) matching of constructive and destructive interference. 
E) minimum beat frequency.

Question 4

The loudness of a musical sound is most related to the sound's

Accepted Answer

A) wavelength. 
B) frequency. 
C) speed. 
D) amplitude. 
E) all of the above 
A) wavelength. 
B) frequency. 
C) speed. 
D) amplitude. 
E) all of the above

Question 5

The vibrations of a longitudinal wave move in a direction

Accepted Answer

A) of wave travel. 
B) at right angles to the direction of wave travel. 
C) opposite to wave travel. 
A) of wave travel. 
B) at right angles to the direction of wave travel. 
C) opposite to wave travel.

Question 6

Infrasonic sound waves have relatively

Accepted Answer

A) low frequencies. 
B) long wavelengths. 
C) both of these 
D) none of the above 
A) low frequencies. 
B) long wavelengths. 
C) both of these 
D) none of the above

Question 7

Why will a struck tuning fork sound louder when it is held against a table?

Accepted Answer

When the vibrating tuning fork is held a

Question 8

Sound will be louder when a struck tuning fork is held

Accepted Answer

A) in the air. 
B) with its base against a tabletop. 
C) with its prongs in shallow water. 
D) in your closed fist. 
A) in the air. 
B) with its base against a tabletop. 
C) with its prongs in shallow water. 
D) in your closed fist.

Question 9

If the frequency of a certain wave is 10 Hz,its period is

Accepted Answer

A) 0.1 s. 
B) 10 s. 
C) 100 s. 
D) none of the above 
A) 0.1 s. 
B) 10 s. 
C) 100 s. 
D) none of the above

Question 10

What is resonance and the conditions for resonance? Give examples.

Accepted Answer

Resonance is the response of any system

Question 11

Wave interference occurs for waves of

Accepted Answer

A) sound. 
B) light. 
C) water. 
D) all of the above 
E) none of the above 
A) sound. 
B) light. 
C) water. 
D) all of the above 
E) none of the above

Question 12

A wave is a vibration in

Accepted Answer

A) space. 
B) time. 
C) both of these 
D) none of the above 
A) space. 
B) time. 
C) both of these 
D) none of the above

Question 13

The natural frequency of an object depends on its

Accepted Answer

A) elasticity. 
B) size and shape. 
C) both of these 
D) none of the above 
A) elasticity. 
B) size and shape. 
C) both of these 
D) none of the above

Question 14

A succession of 2-m long water waves on a lake goes by a piece of floating cork that bobs up and down one complete cycle each second.What is the speed of the wave?

Accepted Answer

A) 0.25 m/s 
B) 0.50 m/s 
C) 1.0 m/s 
D) 2 m/s 
E) 4 m/s 
A) 0.25 m/s 
B) 0.50 m/s 
C) 1.0 m/s 
D) 2 m/s 
E) 4 m/s

Question 15

On days when the air nearest the ground is colder than air above,sound waves tend to

Accepted Answer

A) be refracted upward. 
B) be refracted downward. 
C) travel without refraction. 
A) be refracted upward. 
B) be refracted downward. 
C) travel without refraction.

Question 16

How many vibrations per second are associated with a 101-MHz radio wave?

Accepted Answer

A) less than 101,000,000 
B) 101,000,000 
C) more than 101,000,00 
D) none of the above 
A) less than 101,000,000 
B) 101,000,000 
C) more than 101,000,00 
D) none of the above

Question 17

A sonic boom cannot be produced by

Accepted Answer

A) an aircraft flying slower than the speed of sound. 
B) a whip. 
C) a speeding bullet. 
D) all of the above 
A) an aircraft flying slower than the speed of sound. 
B) a whip. 
C) a speeding bullet. 
D) all of the above

Question 18

A general rule for estimating the distance in kilometers between an observer and a lightning bolt is to count the number of seconds between seeing the lightning and hearing it,and dividing by

Accepted Answer

A) 2. 
B) 3. 
C) 4. 
D) 5. 
E) none of the above 
A) 2. 
B) 3. 
C) 4. 
D) 5. 
E) none of the above

Question 19

An acoustical engineer designing a music hall is most concerned with

Accepted Answer

A) modulation. 
B) forced vibrations. 
C) resonance. 
D) beats. 
E) reverberations. 
A) modulation. 
B) forced vibrations. 
C) resonance. 
D) beats. 
E) reverberations.

Question 20

Sound energy that is not reflected is

Accepted Answer

A) transmitted. 
B) absorbed. 
C) either or both of these 
A) transmitted. 
B) absorbed. 
C) either or both of these

Exam 10: Waves and Sound

Troops break step when marching across a bridge to prevent

When Phil Physiker swings a buzzer over his head in a circle he hears

Resonance can be viewed as forced vibration with the

The loudness of a musical sound is most related to the sound's

The vibrations of a longitudinal wave move in a direction

Infrasonic sound waves have relatively

Why will a struck tuning fork sound louder when it is held against a table?

Sound will be louder when a struck tuning fork is held

If the frequency of a certain wave is 10 Hz,its period is

What is resonance and the conditions for resonance? Give examples.

Wave interference occurs for waves of

A wave is a vibration in

The natural frequency of an object depends on its

A succession of 2-m long water waves on a lake goes by a piece of floating cork that bobs up and down one complete cycle each second.What is the speed of the wave?

On days when the air nearest the ground is colder than air above,sound waves tend to

How many vibrations per second are associated with a 101-MHz radio wave?

A sonic boom cannot be produced by

A general rule for estimating the distance in kilometers between an observer and a lightning bolt is to count the number of seconds between seeing the lightning and hearing it,and dividing by

An acoustical engineer designing a music hall is most concerned with

Sound energy that is not reflected is

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

Light

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

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