Science 2001 Test A

StJoseph'sRomanCatholicPrimarySchool,Pickering 1

StJoseph'sRomanCatholicPrimarySchool,Pickering

Science

TestA

200140min40marks

1. Exploringmagnetism

(a) Sarahtiesapapercliptoapieceofthread.

Shesticksthethreadtothetable.

Sheholdsamagnetabovethepaperclip.

Drawanarrowonthepicturebelowtoshowthedirectionofthemagneticforceactingonthepaperclip.

plasticine

table

thread

paperclip

magnet

1mark


(b) WhathappenstothepaperclipwhenSarahliftsthemagnetaway?

..............1mark

(c) Sarahrepeatsherexperimentusingdifferentobjectsinsteadofthepaperclip.

Whichofthefollowingwillactinthesamewayasthepaperclip?

TickONEbox.

aluminiumfoil plasticpenlid

steelpin woodenmatch1mark

(d) Joelhastwomagnets.Heputsoneonthetable.Heholdstheothermagnetclosetoit,likethis:

Themagnetsdonottoucheachother,butthemagnetonthetableispushedaway.

Whyisthemagnetonthetablepushedaway?

..............

...............................................................................................................1mark


2. Toothcare

(a) Fourchildrenrecordhowoftentheybrushtheirteeth.

Name

Mike

Ian

Lucy

Molly

Beforebreakfast

Afterbreakfast

Beforetea

Beforebed

Lookatthetable.

Whichchildislikelytohavethehealthiestteeth?

..............1mark

(b) Whydoesbrushinghelptoreducetoothdecay?

..............1mark

(c) Whichofthefollowingwouldhelpmostinreducingtoothdecay?

TickONEbox.

drinkmoreorangejuice eatlesssugar

eatlessfat eatmorevegetables1mark


3. Smokingandhealth

(a) Somechildrenwatchavideoshowingwhathappenswhenairpassesthroughalightedcigarette.

Thevideoshowsascientistusingthismodel.

lightedcigarette

plasticine

tube

cottonwool

plasticbottle

Thescientistsqueezestheplasticbottle.Thisforcesairout.

Thensheletsgo.Thisforcesairbackintothebottle,throughthelightedcigarette.

Shedoesthisseveraltimes.Thecottonwoolbecomesblackanddirty.

Whatistakenintothebottlewiththeairandmakesthecottonwooldirty?

..............1mark

(b) Whatorganofthebodydoesthecottonwoolrepresent?

..............1mark

(c) Whatharmfuleffectscancigarettesmokinghaveonthebody?

..............

...............................................................................................................1mark

3


4. Lamp

(a) Atnight,Benswitchesonthelampinhisroom.

Thereisashadowofthechaironthefloor.

Explainhowtheshadowisformedfromthelightofthelamp.

..............

...............................................................................................................1mark

(b) Benlooksatthewindow,andseesareflectionofthelamp.

shadowofchair

reflectionoflamp

lamp

Whyisthereareflectionofthelampinthewindow?

TickONEbox.

Thereisareflectionofthelampinthewindowbecausethewindowis...

shiny hard

strong solid1mark


(c) DrawTWOarrowheadsonthelinesinthepicturebelowtoshowhowlighttravelstoletBenseethereflectionofthelamp.

1mark

5. Ice

(a) Somechildrenpassroundablockofice.Theirhandsfeelcoldandwet.

Whatisthenamefortheprocesswhenicechangestowater?

..............1mark

(b) Whatcausestheicetochangetowaterastheypasstheblockroundfromhandtohand?

..............1mark


(c) Thechildrenhavefouridenticalfrozenicesticks.Theyputeachoneinadifferentplaceintheclassroom.Theyleaveeachofthemforhalfanhour.

icestick

Theycutopentheplasticwrappersandpourouttheliquid.

Theymeasurethevolumeofliquidfromeachicesticktofindouthowmuchicehasturnedtoliquid.

Herearetheirresults.

Volumeofliquidafterhalfanhour

Place Anna'sdeskMarcel'sdesk

Gina'sdesk

Daljit'sdesk

12 16 9 15Volumeofliquid

(cm )3

Usethetabletoanswerthefollowingquestions.

Atwhosedeskdidmostoftheicestickstayfrozen?

..............1mark

(d) (i) Whichofthefourdeskswasinthewarmestpartoftheclassroom?

............1mark

(ii) Explainhowyouknowwhichplacewaswarmest.

............

.1mark


6. Seaweeds

(a) Seaweedsareplants.Theyliveintheseaandontheseashore.Somechildrenareusingakeytoidentifytwobrownseaweeds.

UsethekeybelowtohelpyounameseaweedsAandB.

A........................................... B............................................

Isitbrown?

Doesithaveaholdfast?rounded

Isitgreen?

Bladderwrack

Doesithaveonlyfrond?one

Sealettuce Dulse

Sugarkelp Oarweed

Yes

Yes Yes

Yes

No

No No

No

2marks


(b) Oneoftheseaweedsonthekeyisred.

Nametheredseaweed.

..............1mark

(c) Thisseaweedhasaflexiblestem.

flexiblestem

Wavespulltheseaweedindifferentdirections.

Explainhowaflexible(bendy)stemhelpsthisseaweedtosurviveintheseaswaves.

..............

...............................................................................................................1mark

(d) Seaweedhasaholdfastwhichkeepsitinplace.

Plantsthatliveonlanddonothaveaholdfast.

Whatpartofalandplantkeepstheplantinplace?

..............1mark

(e) Theseaweedsfrondsuselighttomakefoodmaterialsothattheseaweedgrows.

Whatpartofalandplantuseslighttomakefoodmaterial?

..............1mark


7. Cookingrice

(a) RebeccaandJosharecookingriceathome.

Theymeasuresomewaterinajug.

1000

500

cm3

Howmuchwaterdidtheymeasure?

.....................................................cm31mark


(b) Theyputthewaterintoametalsaucepan.

Theyputthesaucepanonthecooker.

Whyismetalagoodmaterialforthesaucepan?

TickONEbox.

Itisveryheavy.

Itisopaque.

Itconductselectricitywell.

Itconductsheatwell.

71mark

(c) Afterfiveminutes,thewaterstartstoboil.Joshputstheuncookedriceintothesaucepan.

Themetalsaucepanishot.Thewoodenhandleofthesaucepanisstillcool.

Explainwhythewoodiscoolbutthemetalishot.

..............

...............................................................................................................1mark


(d) RebeccaandJoshmustbecarefulwiththehotsaucepan,sothattheydonotburnthemselves.

DescribeONEotherthingthatmightburnthechildrenwhiletheyarecookingtherice.

..............1mark

8. Hedgehogs

bramblebush hedgehog slug

(a) Lookatthepicture.

Whichpartofthehedgehogsbodyhelpsstopfoxesfromeatingit?

..............1mark

(b) Thebushmakesfoodmaterialinitsleaves.Thehedgehogsfoodincludesslugs.

Thetwosentencesabovedescribethesamelifeprocess.Whichlifeprocess?

TickONEbox.

growth movement

excretion nutrition

sensing noneofthese

81mark


(c) Thehedgehoggivesbirthtoyoung.Thisshowsthatitreproduces.

Whichofthefollowingshowsthatthebushalsoreproduces?

TickONEbox.

Newleavesgrowinspring.

Leafbudsopeninspring.

Leavesfallinautumn.

Seedsaredispersedinautumn.1mark

(d) Thisgraphshowshowthemassofafemalehedgehogchangesinoneyear.

Graphshowingchangeinmassoffemalehedgehog

900

800

700

600

500

Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec

Time(months)

Mass(g)

Lookatthegraph.Itshowsthatthehedgehoglostweightwhenshehibernated(slept)throughthewinter.

Italsoshowswhenshegavebirth.

Inwhichmonthdoesthegraphshowthatthehedgehoggavebirth?

..............1mark


9. Mixingmaterials


SeemaandAlanaremixingmaterials.

Theyputdifferentmaterialsinfourclearplasticbags.

Theytiethetopofeachbag.

Theywatchwhathappensandrecordtheirobservations.

Bag A:Brownsugarandwater.

BagB:Oilandwater.

BagC:Bicarbonateofsodaandvinegar.

BagD:Bicarbonateofsodaandoil.

Mixture Observations

Waterturnsbrownandcannotseethesugarafterawhile.

Oilfloatsontopofthewater.

Lotsoffizzing.Itlooksfrothy.Bagpuffsup.

Bicarbonategoesinalumpatthebottom.

(a) WritethenamesoftheTHREEliquidsthatthechildrenused.

(i) ...............................................

(ii) ..............................................

(iii) .............................................1mark


(b) Lookatthetable.Inonebagdissolvingwastheonlychange.

Inwhichbagwasdissolvingtheonlychange?

..............1mark

(c) ThemixtureinBagCfizzedandthebagpuffedup.

WhydidBagCpuffup?

..............

..................................................................................................................1mark

(d) Threeofthemixturescanbeseparatedtogetthestartingmaterialsbackagain.Oneofthemixturescannotbeseparated.

Whichbaghasamixturethatcannotbeseparated?

1mark

10. Pendulum

(a) KarenandSamuelmakeapendulumwithsomemodellingclayandsomestring.


WhenKarenletsgooftheclayball,thependulumswingsbackwardsandforwards.

WhatforcecausesthependulumtomovewhenKarenletsgo?

..............1mark

(b) Theyrecordhowlongittakesforthependulumtoswing10times.

Thentheychangethelengthofthestring.Theytimethependulumagain.Theydothiswithfivedifferentlengthsofstring.

Samuelplotstheresultsonagraph.

20

10

00 5 10 15 20 25 30 35 40 45 50

Lengthofstring(cm)

Timefor10swings(seconds)

Describehowthelengthofthestringaffectsthetimetakentoswing.

..............

..................................................................................................................2marks


(c) JimandFunmidothesameexperiment,withdifferentlengthsofstring.Jimsgraphlookslikethis.

30

20

10

00 20 40 60 80 100

Lengthofstring(cm)

Timefor10swings(seconds)

CompareJimsgraphwithSamuels.OneofthepointsonJimsgraphisdrawninthewrongplace.

CircletheresultonJimsgraphwhichismostlikelytobewrong.1mark

Documents

Science 2001 Test A