Clic

ker Q

uest

ions

for W

ave

unit

I gav

e th

ese

clic

ker q

uest

ions

afte

r th

e ac

tivity

was

com

plet

ed e

xcep

t for

th

e W

ave

inte

rfer

ence

dem

onst

ratio

n da

y.

Wav

es o

n a

Strin

g

A

1. If

you

adv

ance

the

mov

ie o

ne fr

ame,

the

knot

at p

oint

A w

ould

beA

.in

the

sam

e pl

ace

B.

high

er

C.

low

er

D.

to th

e rig

htE.

to th

e le

ft

A

2. If

the

pers

on g

ener

ates

a n

ew p

ulse

like

the

first

but

mor

e qu

ickl

y, th

e pu

lse

wou

ld b

eA

.sa

me

size

B.

wid

erC

.na

rrow

er

A

3. If

the

pers

on g

ener

ates

ano

ther

pul

se li

ke th

e fir

st

but h

e m

oves

his

han

d fu

rther

, the

pul

se w

ould

be

A.

sam

e si

ze

B.

talle

rC

.sh

orte

r

A

4. If

the

pers

on g

ener

ates

ano

ther

pul

se li

ke th

e fir

st

but t

he ro

pe is

tigh

tene

d, th

e pu

lse

will

mov

eA

.at

the

sam

e ra

te

B.

fast

erC

.sl

ower

A

A

Intro

slid

e fo

r fol

low

ing

ques

tions

5. If

you

adv

ance

the

mov

ie o

ne fr

ame,

the

knot

at p

oint

A w

ould

be

A.

in th

e sa

me

plac

e B

.hi

gher

C

.lo

wer

D

.to

the

right

E.to

the

left

A

6. If

you

adv

ance

the

mov

ie o

ne fr

ame,

the

patte

rn o

f the

wav

es w

ill b

e __

____

___r

elat

ive

to th

e ha

nd.

A.

in th

e sa

me

plac

e B

.sh

ifted

righ

tC

.sh

ifted

left

D.

shift

ed u

pE.

shift

ed d

own

A

7. If

the

pers

on st

arts

ove

r and

mov

es h

is h

and

mor

e qu

ickl

y, th

e pe

aks o

f the

wav

es w

ill

beA

.th

e sa

me

dist

ance

apa

rtB

.fu

rther

apa

rt

C.

clos

er to

geth

er

A

Wav

e pr

oper

ties

A.lo

wer

its

spee

d.

B.in

crea

se it

s w

avel

engt

h.

C.lo

wer

its

ampl

itude

. D

.sho

rten

its p

erio

d.

8.If

you

low

er th

e fre

quen

cy o

f a

wav

e on

a s

tring

you

will

Four

ier c

licke

r que

stio

ns

1. W

hat w

ill th

is w

ave

look

like

af

ter i

t ref

lect

s?A

.

B. c. D.

Fixe

d en

d

2. W

hat w

ill th

is w

ave

look

like

af

ter i

t ref

lect

s?

Loos

e en

d

A.

B. c. D.

11 W

ave

addi

tion

sim

ple

puls

e

3. T

he p

ulse

on

the

left

is m

ovin

g rig

ht, t

he p

ulse

on

the

right

is m

ovin

g le

ft. W

hat d

o yo

u se

e w

hen

the

puls

es o

verla

p?

Res

t of q

uest

ion

C

A

B

D

E

answ

er

B

Afte

r int

erac

ting

4. If

thes

e tw

o w

aves

wer

e m

ovin

g th

roug

h w

ater

at t

he sa

me

time,

wha

t w

ould

the

wat

er lo

ok li

ke?

A B C D

x x

Wav

e 1

Wav

e 2

CT-

1. A

t a p

artic

ular

inst

ant o

f tim

e, w

ave

1 an

d w

ave

2 ar

e as

sho

wn.

Wha

t doe

s th

e su

m o

f the

two

wav

es lo

ok li

ke?

fto

tal

= f1

+ f2

A)

B) C)

D)

x x

f1(x

)

f2(x

)

Orig

inal

que

stio

n fr

om C

U c

ours

e

Wav

e In

terf

eren

ce

Dra

w w

hat y

ou th

ink

this

wav

e w

ill

look

like

afte

r ref

lect

ing

off t

he b

arrie

r.

3. W

hich

one

is th

e re

flect

ion

patte

rn?

Wav

e pu

lse

from

spea

ker

AB

“Sou

nd w

aves

are

thre

e di

men

sion

al.”

Talk

to y

our p

artn

er:

•Wha

t evi

denc

e yo

u ha

ve th

at

supp

orts

this

.•H

ow th

e w

ave

coul

d be

re

pres

ente

d •H

ow w

ould

refle

ctio

n ch

ange

?

Sket

ch w

hat y

ou th

ink

the

patte

rn

will

look

like

Mea

sure

men

ts

Paus

ed c

lips

Soun

d ac

tivity

I use

d qu

estio

ns 1

-8 w

ith th

e so

und

activ

ity

and

the

rest

on

the

next

day

.

2. W

hat i

s the

spee

d of

the

soun

d w

aves

show

n he

re?

A.3

00 m

/s

B.3

30 m

/s

C.0

.003

0 m

/s

D.6

6 m

/s

3. W

hat i

s the

freq

uenc

y of

the

soun

d w

aves

show

n he

re?

A.0

.003

7 hz

B.6

6 hz

C.2

60 h

z

D.3

00 h

z

E.3

30 h

z

4. W

hat i

s the

per

iod

of th

e so

und

wav

es sh

own

here

?

A.0

.015

1 s

B.0

.003

7 s

C.2

60 s

D.3

00 s

E.3

30 s

5. W

hat i

s the

wav

elen

gth

of th

e so

und

wav

es sh

own

here

?

A.5

m

B.1

.3 m

C.1

m

D.0

.71

m

E.3

00 m

6. If

you

r lab

par

tner

mov

ed th

e fr

eque

ncy

slid

er to

the

left

so th

at

it ch

ange

d fr

om 5

00 to

250

th

e pe

riod

wou

ld b

e

A.t

wic

e as

big

B.

1/2

as b

igC

.St

ays t

he sa

me

D.

1/4

times

as b

igE.

Not

eno

ugh

info

rmat

ion

to d

ecid

e

7. If

you

mov

ed th

e sl

ider

to th

e fa

r rig

ht, d

oubl

ing

the

ampl

itude

, th

e pe

riod

wou

ld b

e…

A.t

wic

e as

big

B.1

/2 a

s bi

gC

.Sta

ys th

e sa

me

D.1

/4 ti

mes

as

big

E.N

ot e

noug

h in

form

atio

n to

dec

ide

a.0.

2 se

cond

sb.

0.20

0 se

cond

sc.

0.00

5 se

cond

s

d.0.

02 s

econ

dse.

0.0

5 se

cond

s

Soun

d w

aves

trav

elin

g ou

t

8. If

the

spea

ker v

ibra

tes b

ack

and

forth

at

200

Hz

how

muc

h tim

e pa

sses

bet

wee

n ea

ch ti

me

it pr

oduc

es a

max

imum

in p

ress

ure?

9.A

spea

ker i

s pla

ying

a c

onst

ant n

ote.

W

hat h

appe

ns to

the

soun

d w

hen

you

1)pu

t a so

lid, t

hick

gla

ss ja

r ove

r it a

nd2)

pum

p th

e ai

r out

from

the

jar.

A)1

=>

hard

ly a

ny d

iffer

ence

2 =>

har

dly

any

diffe

renc

e

B)

1=>

har

dly

any

diffe

renc

e2

=> m

uch

quie

ter

C)

1=>

notic

eabl

y qu

iete

r2

=> h

ardl

y an

y M

OR

E q

uiet

D)

1=>

notic

eabl

y qu

iete

r2=

> m

uch

quie

ter s

till (

near

sile

nce)

E)

Non

e of

thes

e/so

met

hing

els

e/??

10. I

f you

cou

ld p

ut a

dus

t pa

rticl

e in

fron

t of t

he sp

eake

r. W

hich

cho

ice

belo

w sh

ows t

he

motion

of th

e du

st p

artic

le?

dust

A)

(up

and

dow

n)

B)

(ste

adily

to th

e rig

ht)

C)

(left

and

right

)

D)

(no

mot

ion)

E)(c

ircul

ar p

ath)

Fund

amen

tals

of w

aves

11.T

he p

ictu

re sh

ows “

disp

lace

men

t as a

func

tion

of lo

catio

n al

ong

a st

ring”

Wha

t is t

he w

avel

engt

h (

“”)

?

ABC

DE

non

e of

thes

e

Rem

embe

r X a

xis

is p

ositi

onno

t tim

e

Fund

amen

tals

of w

aves

12.T

he p

ictu

re sh

ows “

disp

lace

men

t as a

func

tion

of lo

catio

n al

ong

a st

ring”

Wha

t is t

he a

mpl

itude

?

Rem

embe

r X a

xis

is p

ositi

onno

t tim

e

ABC

DE

non

e of

thes

e

13.L

ooki

ng a

t the

follo

win

g w

avef

orm

, wha

t is

the

perio

d? as

sum

e it

repe

ats i

tsel

f ove

r and

ove

r

time

(sec

)1

2

A.1

sec

B.2

sec

C.1

m/s

D.2

m/s

E.N

ot e

noug

h in

form

atio

n

14 L

ooki

ng a

t tha

t sam

e w

ave,

w

hat i

s its

spee

d?

Tim

e (s

ec)

12

A.1

/2 m

/sB

.2 m

/sC

.5 m

/sD

.20

m/s

E.N

ot e

noug

h in

form

atio

n

15 T

he w

avel

engt

h,

, is 1

0 m

. Wha

t is t

he sp

eed

of

this

wav

e?

CT

2.1.

10 1Ti

me

(sec

)

A)1

m/s

B

)ju

st u

nder

7 m

/sC

) 10

m/s

D

) 15

m/s

E)

Non

e of

the

abov

e/no

t eno

ugh

info

/not

sur

e

CT

2.2.

3

16 W

hat i

s the

per

iod

of th

is w

ave?

a)t 1

b)t 2

c)N

ot a

t all

defin

edd)

Not

wel

l def

ined

, but

t 1 is

the

best

ans

wer

e)N

ot w

ell d

efin

ed, b

ut t 2

is th

e be

st a

nsw

er

t=0

t 1t 2

Am

p

time

17 W

hat i

s the

per

iod

of th

is w

ave?

a)t 1

b)t 2

c)t 2-

t 1d)

t 3-t 1

e)N

one

of th

e ab

ove

t 1t 2

t 3tim

e

0Am

p

t 4

18 W

hich

one

of t

he fo

llow

ing

is m

ost l

ikel

y to

be

impossible

?

A.

Tran

sver

se w

aves

in a

gas

B.

Long

itudi

nal w

aves

in a

gas

C.

Tran

sver

se w

aves

in a

solid

D.

Long

itudi

nal w

aves

in a

solid

E.Th

ey a

ll se

em p

erfe

ctly

pos

sibl

e