1. Waves and Sound Clickers

2. A standing wave occurs when
the amplitude of a wave exceeds its wavelength
the speed of the wave is zero or near zero
any two waves overlap
a wave reflects upon itself
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3. If the waves are going by at the same frequency, the wave that has the greatest speed will have the greatest
wavelength
amplitude
frequency
none of the above
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4. A wave oscillates up and down two complete cycles each second
A wave oscillates up and down two complete cycles each second. If the wave travels an average distance of 6 meters in one second, its wavelength is
1 m
0.5 m
2 m
3 m
6 m
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5. The vibrations of a transverse wave move in a direction
at right angles to the direction of wave travel
along the direction of wave travel
that changes with speed
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6. An object that completes 20 vibrations in 10 seconds has a frequency of
2 hertz
200 hertz
1 hertz
0.5 hertz
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7. The vibrations of a longitudinal wave move in a direction
along the direction of wave travel
that changes with speed
at right angles to the direction of wave travel
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8. An object that completes 10 vibrations in 5 seconds has a period of
None of the above
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9. How are frequency and period related in simple harmonic motion?
They are directly related
They are inversely related
They both measure the time per cycle
They both measure the number of cycles per unit of time
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10. In the waveform of the longitudinal wave shown, the compressed regions correspond to
the wavelength
crests
troughs
the mass
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11. At a fixed boundary, waves are
neither reflected nor inverted
reflected but not inverted
reflected and inverted
inverted but not reflected
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12. What factor determines the speed at which a wave travels through a medium?
the amplitude
the frequency
the medium
the wavelength
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13. What wave characteristic does not change when a wave passes into a new medium?
the amplitude
the frequency
the medium
the wavelength
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14. As a wave moves from a heavy medium into a lighter medium, the transmitted wave will have
increased velocity, increased wavelength, same frequency, and decreased amplitude
decreased velocity, decreased wavelength, same frequency, and decreased amplitude
decreased velocity, decreased wavelength, same frequency, and increased amplitude
increased velocity, increased wavelength, increased frequency, and decreased amplitude
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15. Barry strikes two tuning forks and hears a beat frequency of 5 Hz
Barry strikes two tuning forks and hears a beat frequency of 5 Hz. If one of the tuning forks has a frequency of 480 Hz, what is the highest possible frequency of the other tuning fork?
475 Hz
485 Hz
475Hz or 485 Hz
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16. When measuring sound waves, amplitude is the measure of
pitch
loudness
resonance
harmony
none of these
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17. What kind of wave is a sound wave? Choose all that apply.
compressional
transverse
electromagnetic
longitudinal
mechanical
none of these
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18. You are parked at the railroad tracks and the train blows its whistle, with a frequency of 400 Hz, as it moves away you at constant velocity. Which statement most correctly describes the sound you will hear.
The sound will be a steady 400 Hz pitch.
A steady pitch with a frequency higher than 400 Hz.
A steady pitch with a frequency lower than 400 Hz.
The sound will be increasing in pitch.
The sound will be decreasing in pitch.
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19. A string 3. 0 meters long has a standing wave with 3 segments in it
A string 3.0 meters long has a standing wave with 3 segments in it. What is the wavelength of that standing wave?
0.5 m
1.0 m
1.5 m
2.0 m
2.5 m
3.0 m
4.5 m
6.0 m
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20. Doppler Effect Beats Intensity Resonance Harmonics None of these
When vibrations created by an external source cause an object to vibrate at the same frequency, this is called…
Doppler Effect
Beats
Intensity
Resonance
Harmonics
None of these
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21. If the temperature is currently 35°C, what is the speed of sound traveling through the air?
331 m/s
343m/s
349 m/s
352 m/s
366 m/s
none of these
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