Question 1

In a longitudinal wave, the compressions and rarefactions travel in

Accepted Answer

A)  the same direction.
B)  opposite directions.
C)  neither

Question 2

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

Accepted Answer

A)  upward.
B)  downward.
C)  neither

Question 3

All other things being the same, strings having more mass than other strings will produce

Accepted Answer

A)  higher frequency notes.
B)  lower frequency notes.
C)  the same frequency notes.

Question 4

While at a concert, a wind blows directly from the orchestra toward you. The speed of the sound you hear is

Accepted Answer

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

Question 5

A wave barrier 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

Question 6

A wave having a frequency of 1000 Hz vibrates at

Accepted Answer

A)  less than 1000 cycles per second.
B)  1000 cycles per second.
C)  more than 1000 cycles per second.

Question 7

A floating leaf oscillates up and down two complete cycles each 1 s as a water wave passes by. What is the wave's frequency?

Accepted Answer

A)  0.5 Hz
B)  1 Hz
C)  2 Hz
D)  3 Hz
E)  6 Hz

Question 8

Sound energy that is not reflected is

Accepted Answer

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

Question 9

A floating leaf oscillates up and down 2 complete cycles in 1 s as a water wave of wavelength 10 m passes by. What is the wave's speed?

Accepted Answer

A)  2 m/s
B)  10 m/s
C)  20 m/s
D)  40 m/s
E)  more than 40 m/s

Question 10

Wave interference occurs for

Accepted Answer

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

Question 11

When we consider the time taken for a pendulum to swing to and fro we're talking about the pendulum's

Accepted Answer

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

Question 12

An explosion occurs 34 km away. For sound that travels at 340 m/s, you'll hear the explosion in

Accepted Answer

A)  0.1 s.
B)  1 s.
C)  10 s.
D)  20 s.
E)  more than 20 s.

Question 13

Why does a sonic boom irritate people on the ground below a supersonic aircraft and not passengers inside the aircraft?

Accepted Answer

People below encounter the aircraft's sh...

Question 14

The reflection of sound is

Accepted Answer

A)  reverberation.
B)  an echo.
C)  bouncing waves.

Question 15

While at a concert, a wind blows directly from the orchestra toward you. You hear the average frequencies of sound

Accepted Answer

A)  decreased.
B)  increased.
C)  neither

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

Question 17

The natural frequency of an object depends on its

Accepted Answer

A)  elasticity.
B)  size and shape.
C)  both
D)  neither

Question 18

When sound travels faster higher above ground level than it does closer to the ground, sound bends

Accepted Answer

A)  upward.
B)  downward.
C)  neither

Question 19

Which of the following is not a transverse wave?

Accepted Answer

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

Question 20

The phenomenon of beats results from sound

Accepted Answer

A)  refraction.
B)  reflection.
C)  interference.
D)  all of the above
E)  none of the above

Exam 10: Waves and Sound

A floating leaf oscillates up and down 2 complete cycles in 1 s as a water wave of wavelength 10 m passes by. What is the wave's speed?

Correct AnswerverifiedShow Answer

While at a concert, a wind blows directly from the orchestra toward you. You hear the average frequencies of sound

Correct AnswerverifiedShow Answer

All other things being the same, strings having more mass than other strings will produce

Correct AnswerverifiedShow Answer

Sound energy that is not reflected is

Correct AnswerverifiedShow Answer

Which of the following is not a transverse wave?

Correct AnswerverifiedShow Answer

In a longitudinal wave, the compressions and rarefactions travel in

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A wave having a frequency of 1000 Hz vibrates at

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Why does a sonic boom irritate people on the ground below a supersonic aircraft and not passengers inside the aircraft?

Correct AnswerverifiedPeople below encounter the aircraft's sh...View AnswerShow Answer

The natural frequency of an object depends on its

Correct AnswerverifiedShow Answer

A floating leaf oscillates up and down two complete cycles each 1 s as a water wave passes by. What is the wave's frequency?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

While at a concert, a wind blows directly from the orchestra toward you. The speed of the sound you hear is

Correct AnswerverifiedShow Answer

Wave interference occurs for

Correct AnswerverifiedShow Answer

When sound travels faster higher above ground level than it does closer to the ground, sound bends

Correct AnswerverifiedShow Answer

When we consider the time taken for a pendulum to swing to and fro we're talking about the pendulum's

Correct AnswerverifiedShow Answer

An explosion occurs 34 km away. For sound that travels at 340 m/s, you'll hear the explosion in

Correct AnswerverifiedShow Answer

The reflection of sound is

Correct AnswerverifiedShow Answer

The phenomenon of beats results from sound

Correct AnswerverifiedShow Answer

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People below encounter the aircraft's sh...
View Answer

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