of 24
8/3/2019 Science 2p
1/24
8/3/2019 Science 2p
2/24
Releas
edPISAItems_
Science.doc
Page5
Fu
llcre
dit
Code1
:
C.Theeffectwouldbegreaterinfoodweb
BbecausetheParasiticWasp
hasonlyonefoodsourceinwebB.
Nocre
dit
Code0
:
Otherresponses.
Code9
:
Missing.
ReleasedPISAItem
s_
Science.doc
Page6
S127:Buses
Question1:BUS
ES
S127Q01
Abusisdrivingalo
ngastraightstretchofroad.Thebusdriver,n
amedRay,hasa
cupofwaterrestingonthedashboard:
SuddenlyRayhas
toslamonthebrakes.
Whatismostlikely
tohappentothewaterinthecup?
A
Thewaterwills
tayhorizontal.
B
Thewaterwills
pilloverside1.
C
Thewaterwills
pilloverside2.
D
Thewaterwills
pillbutyoucannottellifitwillspillatside1or
side2.
BUSESSCORING
1
QUESTIONINTEN
T:Process:Demonstratingknowledgeandu
nderstanding
Theme:Forcesandmovement
Area:Scienceintechnologies
Fu
llcre
dit
Code1:
C.Thew
aterwillspilloverside2.
Nocre
dit
Code0:
Otherresponses.
Code9:
Missing.
water
drivingdirection
1
2
8/3/2019 Science 2p
3/24
8/3/2019 Science 2p
4/24
Releas
edPISAItems_
Science.doc
Page9
Question1:CLONING
S128Q01
WhichsheepisDollyidenticalto?
A
Sheep1
B
Sheep2
C
Sheep3
D
Dollysfather
CLONI
NGSCORING1
Fu
llcre
dit
Code1
:
A.Sheep1
Nocre
dit
Code0
:
Otherresponses.
Code9
:
Missing.
Question2:CLONING
S128Q02
Inline14thepartoftheudderthatwasusedisdescribedasaverysmallpiece.
Fromthearticletextyoucanworkoutwhatismeant
byaverysmallpiece.
Thatv
erysmallpieceis
A
acell.
B
agene.
C
acellnucleus.
D
achromosome.
CLONI
NGSCORING2
Fu
llcre
dit
Code1
:
A.acell.
Nocre
dit
Code0
:
Otherresponses.
Code9
:
Missing.
ReleasedPISAItem
s_
Science.doc
Page10
Question3:CLO
NING
S128Q03
Inthelastsentenceofthearticleitisstatedthatmanygovernmentshavealready
decidedtoforbidcloningofpeoplebylaw.
Twopossiblereasonsforthisdecisionarementionedbelow.
Arethesereasons
scientificreasons?
CircleeitherYesorNoforeach.
Reason:
Scientific?
Clonedpeoplecouldbemoresensitivetocertaindiseasesthan
normalpeople.
Yes/No
Peopleshouldnot
takeovertheroleofaCreator.
Yes/No
CLONINGSCORING3
Fu
llcre
dit
Code1:
Yes,No,inthatorder.
Nocre
dit
Code0:
Otherresponses.
Code9:
Missing.
8/3/2019 Science 2p
5/24
Releas
edPISAItems_
Science.doc
Page11
S129
:Daylight
Readthefollowinginformationandanswerthequestionsthatfollow.
DAYLIGHTON22JUNE2002
Today,astheNorthern
Hemispherecelebratesits
longest
day,Australianswill
experiencetheirshortest.
InMelb
ourne*,Australia,the
Sunwillriseat7:36amandset
at5:08pm,givingninehours
and32minutesofdaylight.
Comparetodaytotheyears
longest
dayintheSouthern
Hemisphere,expectedon22
Decemb
er,whentheSunwill
riseat5:55amandsetat8:42
pm,giving14hoursand47
minutesofdaylight.
ThePresidentofthe
AstronomicalSociety,MrPerry
Vlahos,saidtheexiste
nceof
changingseasonsinth
e
NorthernandSouthern
Hemisphereswaslinkedtothe
Earths23-degreetilt.
*MelbourneisacityinAustraliaatalatitudeofabout38degrees
Southoftheequator.
Question1:DAYLIGHT
S129Q01
Whichstatementexplainswhydaylightanddarkness
occuronEarth?
A
The
Earthrotatesonitsaxis.
B
The
Sunrotatesonitsaxis.
C
The
Earthsaxisistilted.
D
The
EarthrevolvesaroundtheSun.
DAYLIGHTSCORING1
Fu
llcre
dit
Code1
:
A.TheEarthrotatesonitsaxis.
Nocre
dit
Code0
:
Otherresponses.
Code9
:
Missing.
ReleasedPISAItem
s_
Science.doc
Page12
Question2:DAY
LIGHT
S129Q02-01
0203041112132199
IntheFigurelightr
aysfromtheSunareshownshiningontheEa
rth.
SupposeitistheshortestdayinMelbourne.
ShowtheEarthsa
xis,theNorthernHemisphere,theSouthernH
emisphereandthe
EquatorontheFigure.Labelallpartsofyouranswer.
DAYLIGHTSCORING2
Note:theimportantfeatureswhenmarkingthisquestionare:
1.TheEarthsaxis
isdrawntiltedtowardstheSunwithintheran
ge10qand45qfrom
verticalforcredit:refertothefollowingdiagram:
Outsideof10qand
45qtoverticalrange:nocredit.
2.ThepresenceorabsenceofclearlylabelledNorthernandSouthernHemispheres,
oroneHemisphere
onlylabelled,theotherimplied.
3.Theequatorisd
rawnatatilttowardstheSunwithintherange10qand45qabove
horizontalforcredit:refertothefollowingdiagram:
CREDITFORAXIS
10O
23O
45O
Earth
L
ight
fromthe
S
un
Figure:lightraysfromSun
8/3/2019 Science 2p
6/24
Releas
edPISAItems_
Science.doc
Page13
Theeq
uatormaybedrawnasanellipticallineorstra
ightline.
Outsideof10qand45qtohorizontalrange:nocredit.
Fu
llcre
dit
Code2
1:DiagramwithEquatortiltedtowardstheSu
natananglebetween10qand
45qandEarthsaxistiltedtowardstheSun
withintherange10qand45q
fromvertical,andtheNorthernandorSouthernHemispherescorrectly
labelled(oroneonlylabelled,theotherimp
lied).
Part
ial
cre
dit
Code1
1:Angleoftiltofaxisbetween10qand45q,N
orthernand/orSouthern
Hemispherescorrectlylabelled(oroneonlylabelled,theotherimplied),but
angleoftiltofEquatornotbetween10qand45q;orEquatormissing.
C
REDITFOREQUATOR
10O
23O
45O
N S
A
Equator
Axis
N
Equator
Axis
N
N
Axis
S
S
Equator
ReleasedPISAItem
s_
Science.doc
Page14
Code12:Angleof
tiltofEquatorbetween10qand45q,Northern
and/orSouthern
Hemisph
erescorrectlylabelled(oroneonlylabelled,th
eotherimplied),but
angleof
tiltofaxisnotbetween10qand45q;oraxismissing.
Code13:Angleof
tiltofEquatorbetween10qand45q,andangle
oftiltofaxis
between
10qand45q,butNorthernandSouthernHem
ispheresnot
correctly
labelled(oroneonlylabelled,theotherimplie
d,orbothmissing).
Nocre
dit
Code01:Northern
andorSouthernHemispherescorrectlylabelled(oroneonly,the
otherimplied)istheonlycorrectfeature.
Code02:Angleof
tiltofEquatorbetween10qand45qistheonly
correctfeature.
NSA
xis
Equator
NS
Axis
Equator
N
Ax
is
Equator
Axis
Equator
N
S
Equator
8/3/2019 Science 2p
7/24
Releas
edPISAItems_
Science.doc
Page15
Code0
3:Angleoftiltofaxisbetween10qand45qis
theonlycorrectfeature.
Code0
4:Nofeaturesarecorrect,orotherresponses
.
Code9
9:Missing.
S
N
Axis
ReleasedPISAItem
s_
Science.doc
Page16
S195:Semm
elweisDiary
Semme
lwe
is
Diary
Tex
t1
July1846.Nextw
eekIwilltakeupapositionasHerrDoktor
attheFirstWardof
thematernityclinicoftheViennaGeneralHospital.Iwasfrigh
tenedwhenIheard
aboutthepercenta
geofpatientswhodieinthisclinic.Thismonthnotlessthan36of
the208mothersd
iedthere,allfrompuerperalfever.Givingb
irthtoachildisas
dangerousasfirst-degreepneumonia.
These
lines
from
the
diary
of
Ignaz
Semmelweis
(1818-1865)
illustratethedevas
tatingeffectsof
puerperalfever,
a
contagious
diseasethatkilled
manywomen
after
childbirth.
Semmelweis
collecteddataabo
utthenumber
ofdeathsfrom
puerperalfeverin
boththeFirstan
d
the
Second
Wards(seediagram).
Physicians,among
themSemmelweis,werecompletelyinthed
arkaboutthecause
ofpuerperalfever.
Semmelweisdiaryagain:
December1846.
Whydosomanywomendiefromthisfev
eraftergivingbirth
withoutanyproblems?Forcenturiessciencehastoldusth
atitisaninvisible
epidemicthatkillsmothers.Causesmaybechangesin
theairorsome
extraterrestrialinflu
enceoramovementoftheearthitself,anear
thquake.
Nowadaysnotman
ypeoplewouldconsiderextraterrestrialinflue
nceoran
earthquakeaspossiblecausesoffever.ButinthetimeSemmelweislived,many
people,evenscien
tists,did!Wenowknowithastodowithhygienicconditions.
Semmelweisknew
thatitwasunlikelythatfevercouldbecaused
byextraterrestrial
influenceoranearthquake.Hepointedatthedatahecollected(seediagram)and
usedthistotrytop
ersuadehiscolleagues.
Diagram
1841
1842
1843
1844
1845
1846
Year
15
10 5
Numberof
Deaths
First
W
ard
Second
Ward
NumberofDeathsper100
deliveriesfrom
puerperalfever
8/3/2019 Science 2p
8/24
8/3/2019 Science 2p
9/24
8/3/2019 Science 2p
10/24
Releas
edPISAItems_
Science.doc
Page21
Code0
2:Otherresponses.
xSotheydontgetsickfromthecold.
xWellwhenyouwashsomethingitwashesaw
aythegerms.
Code9
9:Missing.
Question6:SEMMELWEISDIARY
S195Q06
Manyd
iseasesmaybecuredbyusingantibiotics.Ho
wever,thesuccessofsome
antibioticsagainstpuerperalfeverhasdiminishedinrecentyears.
Whatisthereasonforthis?
A
Onceproduced,antibioticsgraduallylosetheirac
tivity.
B
Bacteriabecomeresistanttoantibiotics.
C
The
seantibioticsonlyhelpagainstpuerperalfeve
r,butnotagainstother
diseases.
D
The
needfortheseantibioticshasbeenreducedbecausepublichealthconditions
hav
eimprovedconsiderablyinrecentyears.
SEMMELWEISDIARYSCORING6
QUEST
IONINTENT:Process:Demonstratingknowledgeandunderstanding
Theme:Biodiversity
Area:Scienceinlifeandhealth
Fu
llcre
dit
Code1
:
B.Bacteriabecomeresistanttoantibiotics.
Nocre
dit
Code0
:
Otherresponses.
Code9
:
Missing.
ReleasedPISAItem
s_
Science.doc
Page22
S210:ClimateChange
Clima
teChange
Tex
t1
Readthefollowing
informationandanswerthequestionswhichfollow.
WHATHUMANA
CTIVITIESCONTRIBUTETOCLIMATE
CHANGE?
Theburningofcoa
l,oilandnaturalgas,aswellasdeforestationandvarious
agriculturalandind
ustrialpractices,arealteringthecompositionoftheatmosphere
andcontributingto
climatechange.Thesehumanactivitieshave
ledtoincreased
concentrationsofp
articlesandgreenhousegasesintheatmosphere.Therelative
importanceofthem
aincontributorstotemperaturechangeisshowninFigure1.
Increasedconcentrationsofcarbondioxideandmethanehavea
heatingeffect.
Increasedconcentrationsofparticleshaveacoolingeffectintwo
ways,labelled
ParticlesandParticleeffectsonclouds.
Figure1:Relative
importanceofthemaincontributorstochangein
temperatureoftheatmosphere.
Barsextendingtotherightofthecentrelineindicateaheatingeffect.Barsextending
totheleftofthecentrelineindicateacoolingeffect.Therelative
effectofParticles
andParticleeffectsoncloudsarequiteuncertain:ineachcasethepossibleeffectis
somewhereintherangeshownbythelightgreybar.
Source:adaptedfromhttp://www.gcrio.org/ipcc/qa/04.html
C
ooling
RelativeImportance
Heating
Carbondioxide
Methane
Particles
Particleeffectsonclouds
knowneffect
possibleeffect
8/3/2019 Science 2p
11/24
8/3/2019 Science 2p
12/24
8/3/2019 Science 2p
13/24
Releas
edPISAItems_
Science.doc
Page27
xExplanation1:Maybethefliesdevelopedad
efencegenesotheinsecticide
wouldnotwork.
Explanation2:He(thefarmer)usedlesseachtime.
[Note:Defencegeneisallowedasanalternativetoresistance.]
Code1
:
xHemightnothavesprayeditproperly.
xThefliescouldhavebuiltupanimmunity.
xThereweredifferenttypesofflieseachtime.
[Note:Acleardistinctionismade
betweendifferenttypesoffliesinthisexample;itisnotreferringtonewflies
comingintothearea.]
xExplanation1:Thetemperaturegotveryhotandaffectedtheinsecticide.
Explanation2:thefarmerdidnotspraythein
secticideonthefliesproperly
[Note:Twotypeb)explanationsgiven,credit
Code1only.]
Code0
:
xThefliescouldhavebeenbreeding.
xBecauseeverytimehesprayedititbecamelessandlesseffective.
xWhenthereismoreofitinthecanitisstrong
er.[Note:Aclearrelationship
betweenvolumeandconcentrationisnotgiven.]
ReleasedPISAItem
s_
Science.doc
Page28
S251:CalfC
lones
Ca
lfClones
Tex
t
Readthefollowing
articleaboutthebirthoffivecalves.
InFebruary1993a
researchteamoftheNationalInstituteforAgriculturalResearch
inBresson-Villiers(France)succeededinproducingfivecloneso
fcalves.The
productionoftheclones(animalswiththesamegeneticmaterial,eventhoughborn
offivedifferentcow
s),wasacomplicatedprocess.
Firsttheres
earchersremovedaboutthirtyeggcellsfrom
acow(letussaythe
5
cowsnamewasBlanche1).Theresearchersremovedthenucle
usfromeachofthe
eggcellstakenfromBlanche1.
Thenthere
searcherstookanembryofromanothercow(letussayBlanche
2).Thisembryocontainedaboutthirtycells.
TheresearchersseparatedtheballofcellsfromBlanche
2intoindividual
10
cells.
Thentheyr
emovedthenucleusfromeachoftheseindividualcells.Each
nucleuswasinjectedseparatelyintoeachofthethirtycellsthatc
amefromBlanche1
(cellsfromwhichth
enucleihadbeenremoved).
Finallythethirtyinjectedeggcellswereimplantedintothirtysurrogatecows.
15
Ninemonthslater,
fiveofthesurrogatecowsgavebirthtothecalfclones.
Oneoftheresearcherssaidthatalargescaleapplication
ofthiscloning
techniquecouldbe
financiallybeneficialforcattlebreeders.
Source:CorinneBensimon,LIBRATION,March1993
8/3/2019 Science 2p
14/24
Releas
edPISAItems_
Science.doc
Page29
Quest
ion1:CALFCLONES
S251Q01-0189
ThemainideatestedintheFrenchexperimentsoncowswasconfirmedbythe
results.WhichmainideacouldhavebeentestedintheFrenchexperiment?
...................................................................................................................................
...................................................................................................................................
CALFCLONESSCORING1
QUESTIONINTENT:Process:Recognisingquestio
ns
Theme:Geneticcontrol
Area:Scienceinlifeandhealth
Fu
llcre
dit
Code1
:
Givesanacceptablemainidea.
xTheideaofwhethercloningofcalvesisposs
ible.
xThedeterminationofthenumberofcalfclone
sthatcouldbeproduced.
Nocre
dit
Code0
:
GivesananswerwithoutmentioningcalvesorcloningORrepeatsalarge
scaleapplicationofthiscloningtechniquecouldbefinanciallybeneficialfor
cattlebreeders.
Code8
:
Offtask.
Code9
:
Missing.
Examp
leresponses
Code1
:
xThatcloningwaspossible.[Note:Thefactthatcalves/cowshavenotbeen
mentionedshouldbedisregarded.]
Code0
:
xThatallcellsofcowsarethesame.
xMasscloningcouldbeachieved.[Note:Thewordmassinthiscontextisnot
correct.]
ReleasedPISAItem
s_
Science.doc
Page30
Question4:CAL
FCLONES
S251Q04
Whichofthefollow
ingstatementsis/aretrue?CircleYesorNofo
reach.
Statement:
Allfivecalveshave
thesametypeof
genes.
Yes/No
Allfivecalveshave
thesamesex.
Yes/No
Thehairofallfivecalveshasthesame
colour.
Yes/No
CALFCLONESSCORING4
QUESTIONINTEN
T:Process:Drawing/evaluatingconclusions
Theme:Geneticcontrol
Area:Scienceinlifeandhealth
Fu
llcre
dit
Code1:
Yes,Yes
,Yes.
Nocre
dit
Code0:
Otherresponses.
Code9:
Missing.
8/3/2019 Science 2p
15/24
8/3/2019 Science 2p
16/24
8/3/2019 Science 2p
17/24
8/3/2019 Science 2p
18/24
8/3/2019 Science 2p
19/24
Releas
edPISAItems_
Science.doc
Page39
xsugar(s)
xcarbohydrate(s)
xsaccharide(s)
xstarch
Nocre
dit
Code0
:
Otherresponses.
Code9
:
Missing.
Quest
ion7:CORN
S307Q07
AttheendofthearticleFerwerdareferstoscientists
whosaythatcarbondioxideis
notthe
maincauseoftheGreenhouseeffect.
KarinfindsthefollowingtableshowingtherelativeGreenhouseeffectcausedbyfour
gases:
RelativeGreenhouseeffectpermolecu
leofgas
Carbondioxide
Methane
Nitrousoxide
C
hlorofluorocarbons
1
30
160
17000
FromthistableKarincannotconcludewhichgasisth
emaincauseoftheincreaseof
theGre
enhouseeffect.Thedatainthetableneedto
becombinedwithotherdatafor
Karintoconcludewhichgasisthemaincauseofthe
increaseoftheGreenhouse
effect.
WhichotherdatadoesKarinneedtocollect?
A
Dataabouttheoriginofthefourgases.
B
Dataabouttheabsorptionofthefourgasesbyplants.
C
Dataaboutthesizeofeachofthefourtypesofm
olecules.
D
Dataabouttheamountsofeachofthefourgases
intheatmosphere.
CORN
SCORING7
Fu
llcre
dit
Score1:D.Dataabouttheamountsofeachofthef
ourgasesintheatmosphere.
Nocre
dit
Score0:Otherresponses.
Code9
:
Missing.
ReleasedPISAItem
s_
Science.doc
Page40
S409:Fitfor
Drinking
Thefigureaboveshowshowwatersuppliedtohousesincitiesis
madefitfor
drinking.
Question1:FITFORDRINKING
S409Q0101020311121399
Itisimportanttoha
veasourceofgooddrinkingwater.Waterfou
ndundergroundis
referredtoasgrou
ndwater.
Giveonereasonw
hythereislessbacteriaandparticlepollutioningroundwaterthan
inwaterfromsurfacesourcessuchaslakesandrivers.
...................................................................................................................................
...................................................................................................................................
(1)GratingW
aterSource
(ReservoirorLake)
(2)Settlingpond
(3)Filter
(4)Chlorin
eis
added
(5)Water
qualityis
tested
Waterinthe
tap
8/3/2019 Science 2p
20/24
8/3/2019 Science 2p
21/24
Releas
edPISAItems_
Science.doc
Page43
xTocleanoutthewaterabitmoreandkillthe
leftoverthings.[Note:Thingsis
notspecificenough.]
xTokeepitcleananddrinkable.
Code9
:
Missing.
Question6:FITFORDRINKING
S409Q060102111299
Supposethatthescientistsinvolvedinthetestingofwateratthewaterplantdiscover
thatthe
rearesomedangerousbacteriainthewaterafterthecleaningprocessis
comple
ted.
Whats
houldpeopleathomedowiththiswaterbeforedrinkingit?
...................................................................................................................................
...................................................................................................................................
FITFO
RDRINKINGSCORING6
Fu
llcre
dit
Code1
1:Responsesthatrefertoboilingthewater.
xBoilit.
Code1
2:Responsesthatrefertoothermethodsofc
leaningthatarepossibletodo
safelyathome.
xTreatthewaterwithchlorinetablets(e.g.,Puratabs).
xUseamicroporefilter.
Nocre
dit
Code0
1:Responsesthatrefertoprofessionalmethodsofcleaningthatare
impossibletocarryoutsafelyathome,orimpracticaltocarryoutathome.
xMixitwithchlorideinabucketandthendrink
it.
xMorechloride,chemicalsandbiologicaldevic
es.
xDistilthewater.
Code0
2:Otherresponses.
xPurifyitagain.
xUseacoffeefilter.
xBuybottledwateruntilthecleaningprocessisfixed.[Note:Avoidsthequestion
beingasked.]
Code9
9:Missing.
ReleasedPISAItem
s_
Science.doc
Page44
Question7:FITFORDRINKING
S409Q07
Candrinkingpollutedwatercausethefollowinghealthproblems?
CircleYesorNo
ineachcase. C
andrinkingpollutedwater
caus
ethishealthproblem?
YesorNo?
Diabetes
Yes/No
Diarrhoea
Yes/No
HIV/
AIDS
Yes/No
FITFORDRINKIN
GSCORING7
Fu
llcre
dit
Code1:
Allthree
correct:No,Yes,No,inthatorder.
Nocre
dit
Code0:
Otherresponses.
Code9:
Missing.
Question10N:FITFORDRINKING
S409Q10N
Howmuchinteres
tdoyouhaveinthefollowinginformation?
Tickonlyoneboxineachrow.
High
Interest
M
edium
Interest
Low
Interest
No
Interest
Knowinghow
wateristestedforbacterial
contamination
1
2
3
4
Learningmoreaboutthechemical
treatmentofwatersupplies
1
2
3
4
Learningwhichdiseasesaretransmittedin
drinkingwater
1
2
3
4
8/3/2019 Science 2p
22/24
Releas
edPISAItems_
Science.doc
Page45
S414
:ToothDecay
Bacteriathatliveinourmouthscausedentalcaries(toothdecay).Carieshasbeena
problem
sincethe1700swhensugarbecameavailab
lefromtheexpandingsugar
canein
dustry.
Today,
weknowalotaboutcaries.Forexample:
x
Bacteriathatcausecariesfeedonsugar.
x
Thesugaristransformedtoacid.
x
Aciddamagesthesurfaceofteeth.
x
Brushingteethhelpstopreventcaries.
Question1:TOOTHDECAY
S414Q01
Whatistheroleofbacteriaindentalcaries?
A
Bacteriaproduceenamel.
B
Bacteriaproducesugar.
C
Bacteriaproduceminerals.
D
Bacteriaproduceacid.
TOOTH
DECAYSCORING1
Fu
llcre
dit
Code1
:
D.Bacteriaproduceacid.
Nocre
dit
Code0
:
Otherresponses.
Code9
:
Missing.
1
23
teeth
bacteria1
Sugar
2Acid
3Mineralsfromthetooths
enamelcovering
ReleasedPISAItem
s_
Science.doc
Page46
Question4:TOO
THDECAY
S414Q04
Thefollowinggraphshowstheconsumptionofsugarandtheam
ountofcariesin
differentcountries.
Eachcountryisrepresentedbyadotinthegraph.
Whichoneofthefollowingstatementsissupportedbythedatagiveninthegraph?
A
Insomecountries,peoplebrushtheirteethmorefrequentlythaninother
countries.
B
Themoresuga
rpeopleeat,themorelikelytheyaretogetca
ries.
C
Inrecentyears,therateofcarieshasincreasedinmanycountries.
D
Inrecentyears,theconsumptionofsugarhasincreasedinm
anycountries.
TOOTHDECAYSCORING4
Fu
llcre
dit
Code1:
B.Them
oresugarpeopleeat,themorelikelytheyare
togetcaries.
Nocre
dit
Code0:
Otherresponses.
Code9:
Missing.12345678910
20
40
60
80
100
1201
40
Averagenumberofdecayedteethperpersonindifferentcountries
Averagesugarconsumption(gramsperpersonperday)
8/3/2019 Science 2p
23/24
Releas
edPISAItems_
Science.doc
Page47
Question8:TOOTHDECAY
S414Q08
Acoun
tryhasahighnumberofdecayedteethperpe
rson.
Canthefollowingquestionsabouttoothdecayinthatcountrybeansweredby
scientificexperiments?CircleYesorNoforeachquestion.
Canthisquestionabouttoothdecaybe
answeredbyscientificexperiments?
YesorNo?
Whatwouldbetheeffectontoothdecayof
puttingfluorideinthewatersupply?
Yes/No
Howmuchshouldavisittothedentistcost?
Yes/No
TOOTH
DECAYSCORING8
Fu
llcre
dit
Code1
:
Bothcorrect:Yes,No,inthatorder.
Nocre
dit
Code0
:
Otherresponses.
Code9
:
Missing.
Ques
tion10N:TOOTHDECAY
S414Q10N
Howm
uchinterestdoyouhaveinthefollowinginformation?
Tickonlyoneboxineachrow.
High
Interest
Medium
Interest
Low
Interest
No
Interest
a)K
nowingwhattoothdecaybacterialook
likeunderamicroscope
1
2
3
4
b)L
earningaboutthedevelopmentofa
v
accinetopreventtoothdecay
1
2
3
4
c)U
nderstandinghowsugar-freefoodscan
c
ausetoothdecay
1
2
3
4
ReleasedPISAItem
s_
Science.doc
Page48
S420:HotW
ork
Question1:HOT
WORK
S420Q01
Peterisworkingon
repairstoanoldhouse.Hehasleftabottleo
fwater,somemetal
nails,andapieceoftimberinsidethebootofhiscar.Aftertheca
rhasbeenoutin
thesunforthreehours,thetemperatureinsidethecarreachesabout40C.
Whathappenstotheobjectsinthecar?CircleYesorNofore
achstatement.
Doesthishappentotheobject(s)?
YesorNo?
Theyallhavethesametemperature.
Yes/No
Aftersometimethewaterbeginstoboil.
Yes/No
Aftersometimethemetalnailsbegintoglowred.
Yes/No
HOTWORKSCOR
ING1
Fu
llcre
dit
Code1:
Allthree
correct:Yes,No,No,inthatorder.
Nocre
dit
Code0:
Otherresponses.
Code9:
Missing.
Question3:HOT
WORK
S420Q03
Fordrinksduringtheday,Peterhasacupofhotcoffee,atatemperatureofabout
90C,andacupofcoldmineralwater,withatemperatureofabo
ut5C.Thecups
areofidenticaltypeandsizeandthevolumeofeachdrinkisthe
same.Peterleaves
thecupssittingina
roomwherethetemperatureisabout20C.
Whatarethetemperaturesofthecoffeeandthemineralwaterlikelytobeafter10
minutes?
A
70Cand10C
B
90Cand5C
C
70Cand25C
D
20Cand20C
8/3/2019 Science 2p
24/24
Releas
edPISAItems_
Science.doc
Page49
HOTW
ORKSCORING3
Fu
llcre
dit
Code1
:
A.70Cand10C
Nocre
dit
Code0
:
Otherresponses.
Code9
:
Missing.
Ques
tion10N:HOTWORK
S420Q10N
Howm
uchinterestdoyouhaveinthefollowinginformation?
Tickonlyoneboxineachrow.
High
Interest
Medium
Interest
Low
Interest
No
Interest
a)U
nderstandinghowtheshapeofthecup
influencesthespeedatwhichcoffeecools
1
2
3
4
b)L
earningaboutthedifferentarrangements
o
fatomsinwood,waterandsteel
1
2
3
4
c)K
nowingwhydifferentsolidsconductheat
d
ifferently
1
2
3
4