Clicker Questions for Wave unit I gave these clicker questions after
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1 Clicker Questions for Wave unit I gave these clicker questions after the activity was completed except for the Wave interference demonstration day.
2 Waves on a String
3 A
4 1. If you advance the movie one frame, the knot at point A would be A. in the same place B. higher C. lower D. to the right E. to the left A
5 A 2. If the person generates a new pulse like the first but more quickly, the pulse would be A. same size B. wider C. narrower
6 3. If the person generates another pulse like the first but he moves his hand further, the pulse would be A. same size B. taller C. shorter A
7 A 4. If the person generates another pulse like the first but the rope is tightened, the pulse will move A. at the same rate B. faster C. slower
8 A Intro slide for following questions
9 A 5. If you advance the movie one frame, the knot at point A would be A. in the same place B. higher C. lower D. to the right E. to the left
10 A 6. If you advance the movie one frame, the pattern of the waves will be relative to the hand. A. in the same place B. shifted right C. shifted left D. shifted up E. shifted down
11 A 7. If the person starts over and moves his hand more quickly, the peaks of the waves will be A. the same distance apart B. further apart C. closer together
12 8.If you lower the frequency of a wave on a string you will A. lower its speed. B. increase its wavelength. C.lower its amplitude. D.shorten its period. Wave properties
13 Fourier clicker questions
14 1. What will this wave look like after it reflects? A. Fixed end B. c. D.
15 2. What will this wave look like after it reflects? A. Loose end B. c. D.
16 3. The pulse on the left is moving right, the pulse on the right is moving left. What do you see when the pulses overlap? 11 Wave addition simple pulse
17 Rest of question A B D E C
18 answer B
19 After interacting
20 Wave 1 Wave 2 4. If these two waves were moving through water at the same time, what would the water look like? A x B x C D
21 CT-1. At a particular instant of time, wave 1 and wave 2 are as shown. What does the sum of the two waves look like? f total = f1 + f2 A) f1(x) x B) f2(x) C) x D) Original question from CU course
22 Wave Interference
23 Draw what you think this wave will look like after reflecting off the barrier.
24 3. Which one is the reflection pattern? Wave pulse from speaker A B
25 Sound waves are three dimensional. Talk to your partner: What evidence you have that supports this. How the wave could be represented How would reflection change?
26 Sketch what you think the pattern will look like
27 Measurements
28 Paused clips
29 Sound activity I used questions 1-8 with the sound activity and the rest on the next day.
30 2. What is the speed of the sound waves shown here? A. 300 m/s B. 330 m/s C m/s D. 66 m/s
31 3. What is the frequency of the sound waves shown here? A hz B. 66 hz C. 260 hz D. 300 hz E. 330 hz
32 4. What is the period of the sound waves shown here? A s B s C. 260 s D. 300 s E. 330 s
33 5. What is the wavelength of the sound waves shown here? A. 5 m B. 1.3 m C. 1 m D m E. 300 m
34 6. If your lab partner moved the frequency slider to the left so that it changed from 500 to 250 the period would be A. twice as big B. 1/2 as big C. Stays the same D. 1/4 times as big E. Not enough information to decide
35 7. If you moved the slider to the far right, doubling the amplitude, the period would be A. twice as big B. 1/2 as big C. Stays the same D. 1/4 times as big E. Not enough information to decide
36 Sound waves traveling out 8. If the speaker vibrates back and forth at 200 Hz how much time passes between each time it produces a maximum in pressure? a. 0.2 seconds b seconds c seconds d seconds e seconds
37 9.A speaker is playing a constant note. What happens to the sound when you 1) put a solid, thick glass jar over it and 2) pump the air out from the jar. A) 1 => hardly any difference 2 => hardly any difference B) 1=> hardly any difference 2 => much quieter C) 1=> noticeably quieter 2 => hardly any MORE quiet D) 1=> noticeably quieter 2=> much quieter still (near silence) E) None of these/something else/??
38 10. If you could put a dust particle in front of the speaker. Which choice below shows the motion of the dust particle? A) (up and down) B) (steadily to the right) C) (left and right) D) (no motion) E) (circular path) dust
39 11.The picture shows displacement as a function of location along a string What is the wavelength ( )? C E none of these D B A Remember X axis is position not time Fundamentals of waves
40 12.The picture shows displacement as a function of location along a string What is the amplitude? C E none of these D B A Remember X axis is position not time Fundamentals of waves
41 13.Looking at the following waveform, what is the period? assume it repeats itself over and over 1 2 time (sec) A.1 sec B. 2 sec C. 1 m/s D. 2 m/s E.Not enough information
42 14 Looking at that same wave, what is its speed? 1 2 Time (sec) A.1/2 m/s B.2 m/s C.5 m/s D.20 m/s E.Not enough information
43 CT The wavelength,, is 10 m. What is the speed of this wave? 1 Time (sec) A) 1 m/s B) just under 7 m/s C) 10 m/s D) 15 m/s E) None of the above/not enough info/not sure
44 CT What is the period of this wave? Amp t=0 t 1 t 2 a) t 1 b) t 2 c) Not at all defined d) Not well defined, but t 1 is the best answer e) Not well defined, but t 2 is the best answer time
45 17 What is the period of this wave? Amp t 1 t 2 t 3 time t 4 0 a) t 1 b) t 2 c) t 2 -t 1 d) t 3 -t 1 e) None of the above
46 18 Which one of the following is most likely to be impossible? A. Transverse waves in a gas B. Longitudinal waves in a gas C. Transverse waves in a solid D. Longitudinal waves in a solid E. They all seem perfectly possible
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