How things work college course/Waves (Physics Classroom ... · 8/9/2015 How things work college...
36
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 1/36 How things work college course/Waves (Physics Classroom)/Testbank From Wikiversity Contents 1 Waves_Physics_classroom 1.1 Waves_Physics_classroomv1s1 1.1.1 Key to Waves_Physics_classroomv1s1 1.2 Waves_Physics_classroomv2s1 1.2.1 Key to Waves_Physics_classroomv2s1 1.3 Waves_Physics_classroomv1s2 1.3.1 Key to Waves_Physics_classroomv1s2 1.4 Waves_Physics_classroomv2s2 1.4.1 Key to Waves_Physics_classroomv2s2 Waves_Physics_classroom If you are reading this as a Wikiversity page, proper pagebreaks should result if printed using your browser's print option. On Chrome, Explorer, and Firefox, this option is available in the upper right hand corner of your screen. But, pagebreaks do not render properly if you use "Printable version" on Wikiversity's Print/export option on the lefthand sidebar. This document contains either a study guide OR pairs of exams taken from the same exam bank If two exams have the same snumber, then v1 and v2 have the same questions, presented in different (random) order. Exams with different snumbers have different questions and may not have the same difficulty. Click items in the table of contents and appropriate page should be reached. This feature should allow you to print only those pages that you need. At the end of this document Attribution for the quizzes identifies where the questions were obtained Study guide links reading materials and/or relevant equations.
Transcript of How things work college course/Waves (Physics Classroom ... · 8/9/2015 How things work college...
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
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How things work college course/Waves (PhysicsClassroom)/TestbankFrom Wikiversity
Contents
1 Waves_Physics_classroom1.1 Waves_Physics_classroomv1s1
1.1.1 Key to Waves_Physics_classroomv1s11.2 Waves_Physics_classroomv2s1
1.2.1 Key to Waves_Physics_classroomv2s11.3 Waves_Physics_classroomv1s2
1.3.1 Key to Waves_Physics_classroomv1s21.4 Waves_Physics_classroomv2s2
1.4.1 Key to Waves_Physics_classroomv2s2
Waves_Physics_classroom
If you are reading this as a Wikiversity page, proper pagebreaks should result if printed using yourbrowser's print option. On Chrome, Explorer, and Firefox, this option is available in the upper right handcorner of your screen. But, pagebreaks do not render properly if you use "Printable version" onWikiversity's Print/export option on the lefthand sidebar.
This document contains either a study guide OR pairs of exams taken from the same exam bankIf two exams have the same snumber, then v1 and v2 have the same questions, presented in different(random) order.Exams with different snumbers have different questions and may not have the same difficulty.Click items in the table of contents and appropriate page should be reached. This feature should allowyou to print only those pages that you need.
At the end of this documentAttribution for the quizzes identifies where the questions were obtainedStudy guide links reading materials and/or relevant equations.
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 2/36
Waves_Physics_classroomv1s1
1. A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope isstretched and a wave is sent along high density rope,
___ a) the low density rope supports a wave with a higher speed
___ b) the low density rope supports a wave with a lower frequency
___ c) the low density rope supports a wave with a higher frequency
___ d) the low density rope supports a wave with a lower speed
2. Two signals (dashed) add to a solid
___ a) dissonance
___ b) fifth
___ c) octave
3. These two pulses will collide and produce
___ a) negative interference
___ b) positive interference
___ c) positive diffraction
___ d) negative diffraction
4. If you start moving towards a source of sound, the pitch becomes
___ a) higher
___ b) unchanged
___ c) lower
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 3/36
5. Two signals (dashed) add to a solid
___ a) fifth
___ b) octave
___ c) dissonance
6. When a wave is reflected off a stationary barrier, the reflected wave
___ a) has higher frequency than the incident wave
___ b) has lower amplitude than the incident wave
___ c) both of these are true
7. What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight (lowdensity) region of the rope to a heavy (high density) rope?
___ a) the wavelength gets longer
___ b) the wavelength stays the same
___ c) the wavelength gets shorter
8. Why don't we hear beats when two different notes on a piano are played at the same time?
___ a) The beats happen so many times per second you can't hear them.
___ b) Reverberation usually stifles the beats
___ c) Echo usually stifles the beats
___ d) The note is over by the time the first beat is heard
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 4/36
9. A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. Howmany beats are heard in 10 seconds?
___ a) 50
___ b) 60
___ c) 20
___ d) 40
___ e) 30
10. Comparing a typical church to a professional baseball stadium, the church is likely to have
___ a) reverberation instead of echo
___ b) echo instead of reverberation
___ c) both reverberation and echo
___ d) neither reverberation nor echo
11. Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
___ a) The difference in path lengths creates more reverberation.
___ b) Rough walls make for a louder sound.
___ c) The difference in path lengths creates more echo.
12. If a source of sound is moving towards you, the pitch becomes
___ a) unchanged
___ b) higher
___ c) lower
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 5/36
13. These two pulses will collide and produce
___ a) positive interference
___ b) negative diffraction
___ c) positive diffraction
___ d) negative interference
14. Two signals (dashed) add to a solid
___ a) dissonance
___ b) fifth
___ c) octave
15. People don't usually perceive an echo when
___ a) it takes more than a tenth of a second after the original sound to arrive
___ b) it arrives less than a tenth of a second after the original sound
___ c) it arrives at a lower pitch
___ d) it arrives at exactly the same pitch
___ e) it arrives at a higher pitch
16. These two pulses will collide and produce
___ a) negative interference
___ b) positive interference
___ c) positive diffraction
___ d) negative diffraction
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 6/36
Key to Waves_Physics_classroomv1s1
1. A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope isstretched and a wave is sent along high density rope,
+ a) the low density rope supports a wave with a higher speed
b) the low density rope supports a wave with a lower frequency
c) the low density rope supports a wave with a higher frequency
d) the low density rope supports a wave with a lower speed
2. Two signals (dashed) add to a solid
a) dissonance
+ b) fifth
c) octave
3. These two pulses will collide and produce
+ a) negative interference
b) positive interference
c) positive diffraction
d) negative diffraction
4. If you start moving towards a source of sound, the pitch becomes
+ a) higher
b) unchanged
c) lower
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 7/36
5. Two signals (dashed) add to a solid
a) fifth
+ b) octave
c) dissonance
6. When a wave is reflected off a stationary barrier, the reflected wave
a) has higher frequency than the incident wave
+ b) has lower amplitude than the incident wave
c) both of these are true
7. What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight (lowdensity) region of the rope to a heavy (high density) rope?
+ a) the wavelength gets longer
b) the wavelength stays the same
c) the wavelength gets shorter
8. Why don't we hear beats when two different notes on a piano are played at the same time?
+ a) The beats happen so many times per second you can't hear them.
b) Reverberation usually stifles the beats
c) Echo usually stifles the beats
d) The note is over by the time the first beat is heard
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 8/36
9. A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. Howmany beats are heard in 10 seconds?
a) 50
b) 60
+ c) 20
d) 40
e) 30
10. Comparing a typical church to a professional baseball stadium, the church is likely to have
+ a) reverberation instead of echo
b) echo instead of reverberation
c) both reverberation and echo
d) neither reverberation nor echo
11. Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
+ a) The difference in path lengths creates more reverberation.
b) Rough walls make for a louder sound.
c) The difference in path lengths creates more echo.
12. If a source of sound is moving towards you, the pitch becomes
a) unchanged
+ b) higher
c) lower
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 9/36
13. These two pulses will collide and produce
+ a) positive interference
b) negative diffraction
c) positive diffraction
d) negative interference
14. Two signals (dashed) add to a solid
+ a) dissonance
b) fifth
c) octave
15. People don't usually perceive an echo when
a) it takes more than a tenth of a second after the original sound to arrive
+ b) it arrives less than a tenth of a second after the original sound
c) it arrives at a lower pitch
d) it arrives at exactly the same pitch
e) it arrives at a higher pitch
16. These two pulses will collide and produce
a) negative interference
+ b) positive interference
c) positive diffraction
d) negative diffraction
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 10/36
Waves_Physics_classroomv2s1
1. A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. Howmany beats are heard in 10 seconds?
___ a) 50
___ b) 60
___ c) 20
___ d) 30
___ e) 40
2. People don't usually perceive an echo when
___ a) it takes more than a tenth of a second after the original sound to arrive
___ b) it arrives at a lower pitch
___ c) it arrives at exactly the same pitch
___ d) it arrives at a higher pitch
___ e) it arrives less than a tenth of a second after the original sound
3. What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight (lowdensity) region of the rope to a heavy (high density) rope?
___ a) the wavelength stays the same
___ b) the wavelength gets shorter
___ c) the wavelength gets longer
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 11/36
4. Why don't we hear beats when two different notes on a piano are played at the same time?
___ a) The note is over by the time the first beat is heard
___ b) Reverberation usually stifles the beats
___ c) The beats happen so many times per second you can't hear them.
___ d) Echo usually stifles the beats
5. If a source of sound is moving towards you, the pitch becomes
___ a) unchanged
___ b) higher
___ c) lower
6. Comparing a typical church to a professional baseball stadium, the church is likely to have
___ a) reverberation instead of echo
___ b) echo instead of reverberation
___ c) neither reverberation nor echo
___ d) both reverberation and echo
7. Two signals (dashed) add to a solid
___ a) octave
___ b) dissonance
___ c) fifth
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 12/36
8. When a wave is reflected off a stationary barrier, the reflected wave
___ a) both of these are true
___ b) has higher frequency than the incident wave
___ c) has lower amplitude than the incident wave
9. If you start moving towards a source of sound, the pitch becomes
___ a) unchanged
___ b) higher
___ c) lower
10. These two pulses will collide and produce
___ a) positive diffraction
___ b) negative diffraction
___ c) positive interference
___ d) negative interference
11. Two signals (dashed) add to a solid
___ a) octave
___ b) dissonance
___ c) fifth
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 13/36
12. Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
___ a) The difference in path lengths creates more reverberation.
___ b) Rough walls make for a louder sound.
___ c) The difference in path lengths creates more echo.
13. These two pulses will collide and produce
___ a) negative diffraction
___ b) positive interference
___ c) negative interference
___ d) positive diffraction
14. A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope isstretched and a wave is sent along high density rope,
___ a) the low density rope supports a wave with a lower frequency
___ b) the low density rope supports a wave with a higher speed
___ c) the low density rope supports a wave with a lower speed
___ d) the low density rope supports a wave with a higher frequency
15. These two pulses will collide and produce
___ a) positive interference
___ b) negative interference
___ c) positive diffraction
___ d) negative diffraction
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 14/36
16. Two signals (dashed) add to a solid
___ a) fifth
___ b) dissonance
___ c) octave
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 15/36
Key to Waves_Physics_classroomv2s1
1. A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. Howmany beats are heard in 10 seconds?
a) 50
b) 60
+ c) 20
d) 30
e) 40
2. People don't usually perceive an echo when
a) it takes more than a tenth of a second after the original sound to arrive
b) it arrives at a lower pitch
c) it arrives at exactly the same pitch
d) it arrives at a higher pitch
+ e) it arrives less than a tenth of a second after the original sound
3. What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight (lowdensity) region of the rope to a heavy (high density) rope?
a) the wavelength stays the same
b) the wavelength gets shorter
+ c) the wavelength gets longer
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 16/36
4. Why don't we hear beats when two different notes on a piano are played at the same time?
a) The note is over by the time the first beat is heard
b) Reverberation usually stifles the beats
+ c) The beats happen so many times per second you can't hear them.
d) Echo usually stifles the beats
5. If a source of sound is moving towards you, the pitch becomes
a) unchanged
+ b) higher
c) lower
6. Comparing a typical church to a professional baseball stadium, the church is likely to have
+ a) reverberation instead of echo
b) echo instead of reverberation
c) neither reverberation nor echo
d) both reverberation and echo
7. Two signals (dashed) add to a solid
a) octave
b) dissonance
+ c) fifth
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 17/36
8. When a wave is reflected off a stationary barrier, the reflected wave
a) both of these are true
b) has higher frequency than the incident wave
+ c) has lower amplitude than the incident wave
9. If you start moving towards a source of sound, the pitch becomes
a) unchanged
+ b) higher
c) lower
10. These two pulses will collide and produce
a) positive diffraction
b) negative diffraction
+ c) positive interference
d) negative interference
11. Two signals (dashed) add to a solid
a) octave
+ b) dissonance
c) fifth
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 18/36
12. Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
+ a) The difference in path lengths creates more reverberation.
b) Rough walls make for a louder sound.
c) The difference in path lengths creates more echo.
13. These two pulses will collide and produce
a) negative diffraction
+ b) positive interference
c) negative interference
d) positive diffraction
14. A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope isstretched and a wave is sent along high density rope,
a) the low density rope supports a wave with a lower frequency
+ b) the low density rope supports a wave with a higher speed
c) the low density rope supports a wave with a lower speed
d) the low density rope supports a wave with a higher frequency
15. These two pulses will collide and produce
a) positive interference
+ b) negative interference
c) positive diffraction
d) negative diffraction
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 19/36
16. Two signals (dashed) add to a solid
a) fifth
b) dissonance
+ c) octave
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 20/36
Waves_Physics_classroomv1s2
1. These two pulses will collide and produce
___ a) positive diffraction
___ b) negative diffraction
___ c) negative interference
___ d) positive interference
2. What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight (lowdensity) region of the rope to a heavy (high density) rope?
___ a) the wavelength stays the same
___ b) the wavelength gets shorter
___ c) the wavelength gets longer
3. Two signals (dashed) add to a solid
___ a) octave
___ b) dissonance
___ c) fifth
4. Why don't we hear beats when two different notes on a piano are played at the same time?
___ a) The note is over by the time the first beat is heard
___ b) Echo usually stifles the beats
___ c) Reverberation usually stifles the beats
___ d) The beats happen so many times per second you can't hear them.
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 21/36
5. Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
___ a) The difference in path lengths creates more reverberation.
___ b) Rough walls make for a louder sound.
___ c) The difference in path lengths creates more echo.
6. These two pulses will collide and produce
___ a) positive interference
___ b) negative diffraction
___ c) negative interference
___ d) positive diffraction
7. People don't usually perceive an echo when
___ a) it arrives at a lower pitch
___ b) it arrives at a higher pitch
___ c) it arrives less than a tenth of a second after the original sound
___ d) it arrives at exactly the same pitch
___ e) it takes more than a tenth of a second after the original sound to arrive
8. If a source of sound is moving towards you, the pitch becomes
___ a) lower
___ b) higher
___ c) unchanged
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 22/36
9. A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. Howmany beats are heard in 10 seconds?
___ a) 50
___ b) 40
___ c) 30
___ d) 60
___ e) 20
10. These two pulses will collide and produce
___ a) negative interference
___ b) positive interference
___ c) negative diffraction
___ d) positive diffraction
11. Two signals (dashed) add to a solid
___ a) octave
___ b) dissonance
___ c) fifth
12. Comparing a typical church to a professional baseball stadium, the church is likely to have
___ a) both reverberation and echo
___ b) neither reverberation nor echo
___ c) echo instead of reverberation
___ d) reverberation instead of echo
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 23/36
13. A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope isstretched and a wave is sent along high density rope,
___ a) the low density rope supports a wave with a higher frequency
___ b) the low density rope supports a wave with a lower frequency
___ c) the low density rope supports a wave with a higher speed
___ d) the low density rope supports a wave with a lower speed
14. Two signals (dashed) add to a solid
___ a) dissonance
___ b) octave
___ c) fifth
15. If you start moving towards a source of sound, the pitch becomes
___ a) higher
___ b) unchanged
___ c) lower
16. When a wave is reflected off a stationary barrier, the reflected wave
___ a) has higher frequency than the incident wave
___ b) has lower amplitude than the incident wave
___ c) both of these are true
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 24/36
Key to Waves_Physics_classroomv1s2
1. These two pulses will collide and produce
a) positive diffraction
b) negative diffraction
c) negative interference
+ d) positive interference
2. What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight (lowdensity) region of the rope to a heavy (high density) rope?
a) the wavelength stays the same
b) the wavelength gets shorter
+ c) the wavelength gets longer
3. Two signals (dashed) add to a solid
a) octave
b) dissonance
+ c) fifth
4. Why don't we hear beats when two different notes on a piano are played at the same time?
a) The note is over by the time the first beat is heard
b) Echo usually stifles the beats
c) Reverberation usually stifles the beats
+ d) The beats happen so many times per second you can't hear them.
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 25/36
5. Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
+ a) The difference in path lengths creates more reverberation.
b) Rough walls make for a louder sound.
c) The difference in path lengths creates more echo.
6. These two pulses will collide and produce
+ a) positive interference
b) negative diffraction
c) negative interference
d) positive diffraction
7. People don't usually perceive an echo when
a) it arrives at a lower pitch
b) it arrives at a higher pitch
+ c) it arrives less than a tenth of a second after the original sound
d) it arrives at exactly the same pitch
e) it takes more than a tenth of a second after the original sound to arrive
8. If a source of sound is moving towards you, the pitch becomes
a) lower
+ b) higher
c) unchanged
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 26/36
9. A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. Howmany beats are heard in 10 seconds?
a) 50
b) 40
c) 30
d) 60
+ e) 20
10. These two pulses will collide and produce
+ a) negative interference
b) positive interference
c) negative diffraction
d) positive diffraction
11. Two signals (dashed) add to a solid
+ a) octave
b) dissonance
c) fifth
12. Comparing a typical church to a professional baseball stadium, the church is likely to have
a) both reverberation and echo
b) neither reverberation nor echo
c) echo instead of reverberation
+ d) reverberation instead of echo
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 27/36
13. A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope isstretched and a wave is sent along high density rope,
a) the low density rope supports a wave with a higher frequency
b) the low density rope supports a wave with a lower frequency
+ c) the low density rope supports a wave with a higher speed
d) the low density rope supports a wave with a lower speed
14. Two signals (dashed) add to a solid
+ a) dissonance
b) octave
c) fifth
15. If you start moving towards a source of sound, the pitch becomes
+ a) higher
b) unchanged
c) lower
16. When a wave is reflected off a stationary barrier, the reflected wave
a) has higher frequency than the incident wave
+ b) has lower amplitude than the incident wave
c) both of these are true
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 28/36
Waves_Physics_classroomv2s2
1. If a source of sound is moving towards you, the pitch becomes
___ a) unchanged
___ b) lower
___ c) higher
2. A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope isstretched and a wave is sent along high density rope,
___ a) the low density rope supports a wave with a higher speed
___ b) the low density rope supports a wave with a lower frequency
___ c) the low density rope supports a wave with a higher frequency
___ d) the low density rope supports a wave with a lower speed
3. Two signals (dashed) add to a solid
___ a) octave
___ b) fifth
___ c) dissonance
4. These two pulses will collide and produce
___ a) positive interference
___ b) negative interference
___ c) positive diffraction
___ d) negative diffraction
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 29/36
5. People don't usually perceive an echo when
___ a) it takes more than a tenth of a second after the original sound to arrive
___ b) it arrives at a lower pitch
___ c) it arrives at exactly the same pitch
___ d) it arrives less than a tenth of a second after the original sound
___ e) it arrives at a higher pitch
6. Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
___ a) Rough walls make for a louder sound.
___ b) The difference in path lengths creates more echo.
___ c) The difference in path lengths creates more reverberation.
7. These two pulses will collide and produce
___ a) positive diffraction
___ b) positive interference
___ c) negative interference
___ d) negative diffraction
8. Two signals (dashed) add to a solid
___ a) fifth
___ b) dissonance
___ c) octave
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https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 30/36
9. Two signals (dashed) add to a solid
___ a) fifth
___ b) octave
___ c) dissonance
10. What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight(low density) region of the rope to a heavy (high density) rope?
___ a) the wavelength gets shorter
___ b) the wavelength gets longer
___ c) the wavelength stays the same
11. Comparing a typical church to a professional baseball stadium, the church is likely to have
___ a) neither reverberation nor echo
___ b) both reverberation and echo
___ c) reverberation instead of echo
___ d) echo instead of reverberation
12. These two pulses will collide and produce
___ a) positive interference
___ b) positive diffraction
___ c) negative interference
___ d) negative diffraction
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https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 31/36
13. A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. Howmany beats are heard in 10 seconds?
___ a) 60
___ b) 20
___ c) 30
___ d) 40
___ e) 50
14. Why don't we hear beats when two different notes on a piano are played at the same time?
___ a) The beats happen so many times per second you can't hear them.
___ b) Reverberation usually stifles the beats
___ c) The note is over by the time the first beat is heard
___ d) Echo usually stifles the beats
15. If you start moving towards a source of sound, the pitch becomes
___ a) lower
___ b) higher
___ c) unchanged
16. When a wave is reflected off a stationary barrier, the reflected wave
___ a) both of these are true
___ b) has lower amplitude than the incident wave
___ c) has higher frequency than the incident wave
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Key to Waves_Physics_classroomv2s2
1. If a source of sound is moving towards you, the pitch becomes
a) unchanged
b) lower
+ c) higher
2. A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope isstretched and a wave is sent along high density rope,
+ a) the low density rope supports a wave with a higher speed
b) the low density rope supports a wave with a lower frequency
c) the low density rope supports a wave with a higher frequency
d) the low density rope supports a wave with a lower speed
3. Two signals (dashed) add to a solid
a) octave
b) fifth
+ c) dissonance
4. These two pulses will collide and produce
a) positive interference
+ b) negative interference
c) positive diffraction
d) negative diffraction
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 33/36
5. People don't usually perceive an echo when
a) it takes more than a tenth of a second after the original sound to arrive
b) it arrives at a lower pitch
c) it arrives at exactly the same pitch
+ d) it arrives less than a tenth of a second after the original sound
e) it arrives at a higher pitch
6. Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
a) Rough walls make for a louder sound.
b) The difference in path lengths creates more echo.
+ c) The difference in path lengths creates more reverberation.
7. These two pulses will collide and produce
a) positive diffraction
+ b) positive interference
c) negative interference
d) negative diffraction
8. Two signals (dashed) add to a solid
+ a) fifth
b) dissonance
c) octave
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 34/36
9. Two signals (dashed) add to a solid
a) fifth
+ b) octave
c) dissonance
10. What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight(low density) region of the rope to a heavy (high density) rope?
a) the wavelength gets shorter
+ b) the wavelength gets longer
c) the wavelength stays the same
11. Comparing a typical church to a professional baseball stadium, the church is likely to have
a) neither reverberation nor echo
b) both reverberation and echo
+ c) reverberation instead of echo
d) echo instead of reverberation
12. These two pulses will collide and produce
+ a) positive interference
b) positive diffraction
c) negative interference
d) negative diffraction
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 35/36
13. A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. Howmany beats are heard in 10 seconds?
a) 60
+ b) 20
c) 30
d) 40
e) 50
14. Why don't we hear beats when two different notes on a piano are played at the same time?
+ a) The beats happen so many times per second you can't hear them.
b) Reverberation usually stifles the beats
c) The note is over by the time the first beat is heard
d) Echo usually stifles the beats
15. If you start moving towards a source of sound, the pitch becomes
a) lower
+ b) higher
c) unchanged
16. When a wave is reflected off a stationary barrier, the reflected wave
a) both of these are true
+ b) has lower amplitude than the incident wave
c) has higher frequency than the incident wave
8/9/2015 How things work college course/Waves (Physics Classroom)/Testbank Wikiversity
https://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)/Testbank 36/36
Attribution (for quiz questions) under CCbySA license
http://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)
Study guide
http://www.physicsclassroom.com/class/waves
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