Clicker Questions for Sound

7/26/2019 Clicker Questions for Sound

1/24

Sound activity

(Clicker Questions)


2/24

1. A student started the speaker by

clicking on the stopwatch. How

many sound waves are there in this

trialA. !". #

C. $%. &


3/24

2. What is the speed of the

sound waves shown here?

A. !'' ms

". !!' ms

C. '.''!' ms

%. ms


4/24

3. What is the frequency of the


A. '.''!* h+

". h+

C. ,' h+

%. !'' h+

-. !!' h+


5/24

4. What is the period of the


A. '.'1#1 s

". '.''!* s

C. ,' s

%. !'' s

-. !!' s


6/24

5. What is the wavelength of the


A. # m

". 1.! m

C. 1 m

%. '.*1 m

-. !'' m


7/24

. / your lab partner moved the

/re0uency slider to the le/t sothat it changed /rom #'' to ,#'

the period would be

A. twice as big

". 1, as big

C. Stays the same

%. 1$ times as big

-. ot enough in/ormation to decide


8/24

*. / you moved the slider to the/ar right2 doubling the

amplitude2the period would be3A. twice as big

". 1, as bigC. Stays the same

%. 1$ times as big

-. ot enough in/ormation to decide


9/24

a. '., seconds

b. '.,'' seconds

c. '.''# seconds

d. '.', seconds

e. '.'# seconds

Sound waves traveling out

&. / the speaker vibrates back and /orth at,'' H+ how much time passes between each

time it produces a ma4imum in pressure


10/24

5.A speaker is playing a constant note.

6hat happens to the sound when you

1) put a solid2 thick glass 7ar over it and

,) pump the air out /rom the 7ar.

A) 1 89 hardly any di//erence , 89 hardly any di//erence

") 189 hardly any di//erence

, 89 much 0uieter

C) 189 noticeably 0uieter

, 89 hardly any :;


11/24

10. If you could put a dust

particle in front of the speaker.Which choice below shows the

motionof the dust particle?

dust

A) (up and down)

B) (steadily to the right)

C) (left and right)

D) (no motion)

E) (circular path)


12/24

=undamentals o/ waves

11.>he picture shows ?displacement as a

/unction o/ location along a string@

6hat is the wavelength (?@)

A

"C %

- none o/ these


13/24

=undamentals o/ waves

1,.>he picture shows ?displacement as a

/unction o/ location along a string@

6hat is the amplitude


14/24

1!.Booking at the /ollowing wave/orm2

what is the period assume it repeats itsel/

over and over

time (sec)1 ,

A.1 sec

". , secC. 1 ms

%. , ms

-.ot enough in/ormation


15/24

1$ Booking at that same wave2

what is its speed

>ime (sec)1 ,

A.1, ms

"., msC.# ms

%.,' ms

-.ot enough in/ormation


16/24

1# >he wavelength2 2 is 1' m. 6hat is the

speed o/ this wave

C> ,.1.1'

1

>ime (sec)

A) 1 ms

") 7ust under * ms

C) 1' ms

%) 1# ms

-) one o/ the abovenot enough in/onot sure


17/24

C> ,.,.!

1 6hat is the period o/ this wave

a) t1

b) t,c) ot at all de/ined

d) ot well de/ined2 but t1 is the best answer

e) ot well de/ined2 but t,is the best answer

t8' t1t,

Amp

time


18/24

1* 6hat is the period o/ this wave

a) t1

b) t,

c) t,Dt

1

d) t!Dt1

e) one o/ the above

t1 t, t!

Amp

time

'

t$


19/24

18 Which one of the following is most likely to be

impossible?

A. Transverse waves in a gas

B. Longitudinal waves in a gasC. Transverse waves in a solid

D. Longitudinal waves in a solid

E. They all seem perfectly possible


20/24

19. To increase the volume of a tone at

400 Hz heard by the listener, thespeaker must oscillate back and forth

more times each second than it does to

produce the tone with lower volume.A. >rue ". =alse


21/24

n the followin! !raph we have plotted thepressure measured at the listener"s ear as a

function of time for a #00 Hz tone

!enerated by the speaker.


22/24

#0. $hich of the blue solid curves could

represent the curve for a lower pitch %


23/24

#1. $hich of the blue curves could represent

the curve for a louder volume%


24/24

##. $hich of the blue curves could

represent the curve if the speaker settin!s

are unchan!ed, but the listener is further%

Documents

Clicker Questions for Sound