Question 1

Refraction of sound can occur in

Accepted Answer

A) air. 
B) water. 
C) both of these 
D) none of the above 
A) air. 
B) water. 
C) both of these 
D) none of the above

Question 2

Sound refraction depends on the speed of sound being

Accepted Answer

A) constant. 
B) variable. 
C) proportional to frequency. 
D) inversely proportional to wavelength. 
E) none of the above 
A) constant. 
B) variable. 
C) proportional to frequency. 
D) inversely proportional to wavelength. 
E) none of the above

Question 3

Our ears are best at hearing

Accepted Answer

A) infrasonic sound. 
B) ultrasonic sound. 
C) both of these 
D) none of the above 
A) infrasonic sound. 
B) ultrasonic sound. 
C) both of these 
D) none of the above

Question 4

Bree dips a pair of prongs onto a water surface and produces waves.When she dips more frequently the resulting waves

Accepted Answer

A) have shorter wavelengths. 
B) remain the same in wavelength. 
C) have longer wavelengths. 
D) move faster. 
E) none of the above 
A) have shorter wavelengths. 
B) remain the same in wavelength. 
C) have longer wavelengths. 
D) move faster. 
E) none of the above

Question 5

When we consider the time for an oscillating system to make a vibration we're talking about

Accepted Answer

A) frequency. 
B) period. 
C) wavelength. 
D) amplitude. 
A) frequency. 
B) period. 
C) wavelength. 
D) amplitude.

Question 6

Musical tones are characterized by

Accepted Answer

A) quality. 
B) partial tones 
C) harmonics. 
D) all of the above 
E) none of the above 
A) quality. 
B) partial tones 
C) harmonics. 
D) all of the above 
E) none of the above

Question 7

If you quickly run toward the orchestra at a concert,the frequency of the sound you hear will be

Accepted Answer

A) decreased. 
B) increased. 
C) neither of these 
A) decreased. 
B) increased. 
C) neither of these

Question 8

Wave speed and wave frequency are two terms that are

Accepted Answer

A) basically the same. 
B) fundamentally different from each other. 
C) opposites. 
D) reciprocals. 
A) basically the same. 
B) fundamentally different from each other. 
C) opposites. 
D) reciprocals.

Question 9

Ultrasonic 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 10

When we consider how frequently an oscillating system vibrates we're talking about

Accepted Answer

A) frequency. 
B) period. 
C) wavelength. 
D) amplitude. 
A) frequency. 
B) period. 
C) wavelength. 
D) amplitude.

Question 11

Repeatedly tap the side of a drinking glass with a spoon as you fill the glass with water and the pitch of the sound

Accepted Answer

A) increases. 
B) decreases. 
C) remains relatively constant. 
A) increases. 
B) decreases. 
C) remains relatively constant.

Question 12

The least energy required to produce forced vibrations in an object occurs

Accepted Answer

A) below its natural frequency. 
B) at its natural frequency. 
C) above its natural frequency. 
D) none of the above 
A) below its natural frequency. 
B) at its natural frequency. 
C) above its natural frequency. 
D) none of the above

Question 13

The frequency of the second hand on a clock is

Accepted Answer

A) 1 Hz. 
B) 1/60 Hz. 
C) 60 Hz. 
A) 1 Hz. 
B) 1/60 Hz. 
C) 60 Hz.

Question 14

A wave of 60 vibrations per second travels 30 m in 1 s.Its frequency is

Accepted Answer

A) 30 Hz. 
B) 60 Hz. 
C) more than 60 Hz. 
D) none of the above 
A) 30 Hz. 
B) 60 Hz. 
C) more than 60 Hz. 
D) none of the above

Question 15

Compressions and rarefactions travel

Accepted Answer

A) at right angles to the wave. 
B) in the same direction of the wave. 
C) in opposite directions of the wave. 
D) none of the above 
A) at right angles to the wave. 
B) in the same direction of the wave. 
C) in opposite directions of the wave. 
D) none of the above

Question 16

The object with a natural frequency of higher pitch is a

Accepted Answer

A) small bell. 
B) large bell. 
C) either of these 
D) none of the above 
A) small bell. 
B) large bell. 
C) either of these 
D) none of the above

Question 17

A bow wave is produced in water when the speed of an object

Accepted Answer

A) matches the speed of waves in water. 
B) exceeds the speed of waves in water. 
C) is less than the speed of waves in water. 
D) none of the above 
A) matches the speed of waves in water. 
B) exceeds the speed of waves in water. 
C) is less than the speed of waves in water. 
D) none of the above

Question 18

When sound travels faster at ground level than higher in the air,sound tends to bend

Accepted Answer

A) upward. 
B) downward. 
C) neither of these 
A) upward. 
B) downward. 
C) neither of these

Question 19

During a single period,the distance traveled by a wave is

Accepted Answer

A) one-half wavelength. 
B) one wavelength. 
C) two wavelengths. 
D) more information is needed 
A) one-half wavelength. 
B) one wavelength. 
C) two wavelengths. 
D) more information is needed

Question 20

A wave travels an average distance of 6 m in 1 s.What is the wave's average velocity?

Accepted Answer

A) less than 0.2 m/s 
B) 1 m/s 
C) 3 m/s 
D) 6 m/s 
E) more than 6 m/s 
A) less than 0.2 m/s 
B) 1 m/s 
C) 3 m/s 
D) 6 m/s 
E) more than 6 m/s

Exam 10: Waves and Sound

Refraction of sound can occur in

Sound refraction depends on the speed of sound being

Our ears are best at hearing

Bree dips a pair of prongs onto a water surface and produces waves.When she dips more frequently the resulting waves

When we consider the time for an oscillating system to make a vibration we're talking about

Musical tones are characterized by

If you quickly run toward the orchestra at a concert,the frequency of the sound you hear will be

Wave speed and wave frequency are two terms that are

Ultrasonic sound waves have relatively

When we consider how frequently an oscillating system vibrates we're talking about

Repeatedly tap the side of a drinking glass with a spoon as you fill the glass with water and the pitch of the sound

The least energy required to produce forced vibrations in an object occurs

The frequency of the second hand on a clock is

A wave of 60 vibrations per second travels 30 m in 1 s.Its frequency is

Compressions and rarefactions travel

The object with a natural frequency of higher pitch is a

A bow wave is produced in water when the speed of an object

When sound travels faster at ground level than higher in the air,sound tends to bend

During a single period,the distance traveled by a wave is

A wave travels an average distance of 6 m in 1 s.What is the wave's average velocity?

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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