Question 1

The beat frequency produced when a 240-hertz tuning fork and a 246-hertz tuning fork are sounded together is

Accepted Answer

A) 6 hertz. 
B) 12 hertz. 
C) 240 hertz. 
D) 245 hertz. 
E) none of the above 
A) 6 hertz. 
B) 12 hertz. 
C) 240 hertz. 
D) 245 hertz. 
E) none of the above

Question 2

The A in AM radio stands for

Accepted Answer

A) acceleration. 
B) authorized. 
C) amplitude. 
D) agony. 
E) almost. 
A) acceleration. 
B) authorized. 
C) amplitude. 
D) agony. 
E) almost.

Question 3

For radio transmission, which has the higher frequency?

Accepted Answer

A) carrier wave 
B) sound wave 
C) neither of these 
A) carrier wave 
B) sound wave 
C) neither of these

Question 4

Reports are that singer Caruso was able to shatter a crystal chandelier with his voice, which illustrates

Accepted Answer

A) an echo. 
B) sound refraction. 
C) beats. 
D) resonance. 
E) interference. 
A) an echo. 
B) sound refraction. 
C) beats. 
D) resonance. 
E) interference.

Question 5

When sound waves superimpose they can interfere

Accepted Answer

A) constructively. 
B) destructively. 
C) either of these 
D) neither of these 
A) constructively. 
B) destructively. 
C) either of these 
D) neither of these

Question 6

The least energy required to produce forced vibration 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 7

Resonance occurs with forced vibration that requires 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 8

A dolphin perceives its environment by the sense of

Accepted Answer

A) sight. 
B) sound. 
C) both of these 
D) neither of these 
A) sight. 
B) sound. 
C) both of these 
D) neither of these

Question 9

Refraction of sound can occur in

Accepted Answer

A) air. 
B) water. 
C) both of these 
D) neither of these 
A) air. 
B) water. 
C) both of these 
D) neither of these

Question 10

The source of every sound is something that is

Accepted Answer

A) vibrating. 
B) moving. 
C) accelerating. 
D) undergoing simple harmonic motion. 
E) a net emitter of energy. 
A) vibrating. 
B) moving. 
C) accelerating. 
D) undergoing simple harmonic motion. 
E) a net emitter of energy.

Question 11

Sound travels fastest in

Accepted Answer

A) air. 
B) water. 
C) steel. 
D) a vacuum. 
A) air. 
B) water. 
C) steel. 
D) a vacuum.

Question 12

Sound refraction can occur when the speed of sound

Accepted Answer

A) remains constant. 
B) changes. 
C) ranges below supersonic. 
D) none of the above 
A) remains constant. 
B) changes. 
C) ranges below supersonic. 
D) none of the above

Question 13

Which does NOT belong to the same family?

Accepted Answer

A) infrasonic waves 
B) ultrasonic waves 
C) radio waves 
D) shock waves 
E) longitudinal waves 
A) infrasonic waves 
B) ultrasonic waves 
C) radio waves 
D) shock waves 
E) longitudinal waves

Question 14

The frequencies of sound that carry farther in air are

Accepted Answer

A) low. 
B) high. 
C) ultrasonic. 
D) none of the above 
A) low. 
B) high. 
C) ultrasonic. 
D) none of the above

Question 15

When sound travels faster near the ground than above, bending of sound tends to be

Accepted Answer

A) upward. 
B) downward. 
C) to the left. 
D) to the right. 
E) none of the above 
A) upward. 
B) downward. 
C) to the left. 
D) to the right. 
E) none of the above

Question 16

Knowing that the atomic number of neon is greater than that of helium, at the same temperature and pressure, how does the speed of sound in helium gas compare to the speed of sound in neon gas?

Accepted Answer

A) greater in neon than in helium 
B) greater in helium than in neon 
C) the same in both gases 
D) depends on the frequency of the sound generated 
A) greater in neon than in helium 
B) greater in helium than in neon 
C) the same in both gases 
D) depends on the frequency of the sound generated

Question 17

A high-frequency sound source produces a high

Accepted Answer

A) speed. 
B) amplitude. 
C) pitch. 
D) all of the above 
E) none of the above 
A) speed. 
B) amplitude. 
C) pitch. 
D) all of the above 
E) none of the above

Question 18

A 1056-hertz tuning fork is struck at the same time as a note on the piano and you hear 2 beats/second. You tighten the piano string very slightly and then hear 3 beats/second. What is the frequency of the piano string?

Accepted Answer

A) 1053 hertz 
B) 1054 hertz 
C) 1056 hertz 
D) 1058 hertz 
E) 1059 hertz 
A) 1053 hertz 
B) 1054 hertz 
C) 1056 hertz 
D) 1058 hertz 
E) 1059 hertz

Question 19

To estimate the distance in kilometers of a flash of lightning, count the number of seconds between seeing the flash and hearing the accompanying thunder, then divide 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 20

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.

Exam 20: Sound

The beat frequency produced when a 240-hertz tuning fork and a 246-hertz tuning fork are sounded together is

The A in AM radio stands for

For radio transmission, which has the higher frequency?

Reports are that singer Caruso was able to shatter a crystal chandelier with his voice, which illustrates

When sound waves superimpose they can interfere

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

Resonance occurs with forced vibration that requires the

A dolphin perceives its environment by the sense of

Refraction of sound can occur in

The source of every sound is something that is

Sound travels fastest in

Sound refraction can occur when the speed of sound

Which does NOT belong to the same family?

The frequencies of sound that carry farther in air are

When sound travels faster near the ground than above, bending of sound tends to be

Knowing that the atomic number of neon is greater than that of helium, at the same temperature and pressure, how does the speed of sound in helium gas compare to the speed of sound in neon gas?

A high-frequency sound source produces a high

A 1056-hertz tuning fork is struck at the same time as a note on the piano and you hear 2 beats/second. You tighten the piano string very slightly and then hear 3 beats/second. What is the frequency of the piano string?

To estimate the distance in kilometers of a flash of lightning, count the number of seconds between seeing the flash and hearing the accompanying thunder, then divide by

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

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