2007 KS2 SCIENCE Mark Scheme

7/24/2019 2007 KS2 SCIENCE Mark Scheme

1/36

Science tests

Mark schemefor Paper X

National curriculum assessments

Science tests

Mark schemesTests A and B, levels 35

2007

Sc

KEY STAGE

2

LEVELS

35


2/36

First published 2007

Qualifications and Curriculum Authority 2007

ISBN 1-85838-892-9

Reproduction, storage, adaptation or translation, in any form or by any means, of this

publication is prohibited without prior written permission of the publisher, unless within

the terms of licences issued by the Copyright Licensing Agency. Excerpts may be

reproduced for the purpose of research, private study, criticism or review, or by

educational institutions solely for educational purposes, without permission, providing

full acknowledgement is given.

Printed in Great Britain by the Qualifications and Curriculum Authority under the authority

and superintendence of the Controller of Her Majestys Stationery Office and Queens

Printer of Acts of Parliament.

The Qualifications and Curriculum Authority is an exempt charity under Schedule 2 ofthe Charities Act 1993.

Qualifications and Curriculum Authority

83 Piccadilly

London W1J 8QA

www.qca.org.uk

QCA wishes to make its publications widely accessible. Please contact us if you have any

specific accessibility requirements.


3/36

Marking the science tests

As in 2006, external markers, employed by the external marking agencies under contract to QCA, will

mark the test papers. The markers will follow the mark schemes in this booklet, which is supplied to

teachers for information.

This booklet contains the mark schemes for the levels 35 tests A and B. Level threshold tables will be

posted on the NAA website (www.naa.org.uk/tests) on 25 June 2007.

General guidance

The structure of the mark schemes

The marking information for each question is set out in the form of tables. The question column on

the left-hand side of each table provides a quick reference to the question number and question part.

The mark column gives the number of marks available for each question part.

The requirements column may include three types of information:

a general statement describing what is required for the award of the mark

examples of specific creditworthy responses showing correct science

examples of creditworthy responses beyond the key stage 2 programme of study.

The allowable answers column gives examples of allowable creditworthy responses, showing correct

science which may not be as clearly expressed.

The additional guidance column may include different types of information:

specific responses which are not creditworthy either because information from the question has

been rephrased, or because the responses imply incorrect scientific knowledge

answers which are insufficient in themselves to gain credit, but are not incorrect

science, and would therefore not lose credit if used with a correct response.

Where two marks are available for a question which describes the relationship between two

continuous variables, the following will apply:

two marks will be awarded for a creditworthy general comparison of the variables in question,

eg the bigger the grains, the longer the sugar takes to dissolve

one mark will be awarded for a pair of creditworthy specific comparisons, eg big grains dissolve

slowly and small grains dissolvefast

one mark will be awarded for a single creditworthy comparison, eg the biggest grains dissolve mostslowly.

Applying the mark schemes

The mark schemes give scientifically correct answers to each question as well as providing guidance

on, and examples of, other answers which are allowable. In cases of alternative wording or where an

answer is drawn rather than written, external markers will exercise their professional judgement.

1


4/36


5/36

TestAquestion1

:Conductingelectricity

Allowableanswers

Question

Requirements

Mark

AwardONEmarkforanindicationthat

thebulb/lampw

illlight:

thebulbwill

lightup

thelampwillturnon.

AwardTWOma

rksforcorrectlyclassifying

allfiveobjects:

Ifyouareunabletoawardtwomarks,

awardONEmarkforcorrectlyclassifying

anythreeorfo

urobjects.

1a 4/1a

1/2c

1b 3/1c

1m 2m 1m

ONEmarkmaybeawardedfor:

thebulbwillwork

theycanseeifthelightwillgoon.

Donotgivecreditforaresponsethatincludes

incorrectscience:

theobjectwilllightup

theywilllightupormove.

Donotgivecreditforan

insufficientresponse

thatdoesnotfullydescrib

etheevidencethat

showstheelectricityflows:

thecircuitconductsele

ctricity

electricitywillflowaroundthecircuit

iftheobjectismetal.



thatdescribesplacingthe

clipstogether:

whentheyputtheclip

stogetherthe

bulbwilllightup.

Additionalguidance

or

Whenapplyingthismarkscheme,pleasealsorefertotheGeneralguidancegivenonpages1and2.

3

Doestheobjectconductelectricity?

Object

woodenruler

steelscissors

sheetofpaper

rubber

brasspin

no

yes

no

no

yes


6/36

TestAquestion2:Sweets

Allowableanswers

Question

Requirements

Mark

AwardONEmarkforindicatingtheamount

oftimeplanned

fortheinvestigation:

2hours.

AwardONEma

rkforrecognisingthatthe

investigationtookadifferentamountof

timethanplann

ed:

thetimeheleftthesweet

hedidnotle

aveitaslongashesaid

hewould

(hechanged)thetime(ittook).

AwardONEmarkforaconclusionrelating

todissolvingwh

ichisconsistentwiththe

evidence:

thesweetha

sdissolved

thetimetakenforthesweetto

dissolvewas

20minutes

thewatergo

tdarkerasthesweet

dissolved.

2a 1/2a

2b 1/2d

1/1b

2c 1/2j

1m 1m 1m

ON

Emarkmaybeawardedfor:

heleftitfor20minutes

hedidnotleavethesweetuntil11

.00

heendedhisinvestigationat9.2

0

thesweettooklesstimetodissolve

(thanhethought).

ON

Emarkmaybeawardedforan

obs

ervationalresponse:

thesweetcannotbeseenafter20

minutes

thewaterchangedcolour.


insufficientresponse:

from9until11.


incorrectscience:

thetemperature.



thatdescribestheoutcom

eratherthanthe

changeintheplan:

thesweetdissolved.



indicatingPetertookphotos:

hetooksomephotosofthesweet.


incorrectsciencewhichgo

esbeyondthe

evidence:

ifyouleaveasweetin

yourmouthitwill

melt

thesweettakes2hourstodissolvein

50cm

3ofcoldwater

themoreyoukeepitinwater,

themoreit

dissolves

thesweetdissolvedin

hismouth.



itdisappeared/hasgon

e

itcouldnothavemelted.

Additionalguidance

4


7/36

TestAquestion

2:Sweets(continued)

Allowableanswers

Question

Requirements

Mark

AwardONEma

rkfor:

ah

otplace

2d 1/2a

1m

Additionalguidance

Whenapplyin

gthismarkscheme,pleasealsorefertotheGeneralguidancegivenonpages1and2.

5


8/36

TestAqu

estion3:Teeth

Allowableanswers

Question

Requirements

Mark

AwardONEma

rkfor:

tenpupils.

AwardONEma

rkforallfourcorrectbars

shadedasshow

nbelow:

AwardONEma

rkforoneotherwayof

keepingteethh

ealthy:

brushherteeth(regularly)

donotbrush

teethfortoolong/

toomuch/to

ooften/toohard

getanewto

othbrush(regularly)

visitthedentist(regularly)

(usea)tooth

pick/dentalfloss

(usefluoride

)toothpaste

(use)mouthwash

donotdrink

somanyfizzydrinks

donoteatlo

tsofacidicfoods

drinkwater/fluoridatedwater

eatlotsofcalcium-containing

products/drinkmilk

eatabalanceddiet

chew

sugar-freegum.

3a 1/2i

3b 1/2h

3c 2/2a

1m 1m 1m

ON

Emarkmaybeawardedforawayof

preventingdamagetoteeth:

wearagumshieldwhenplaying

contactsport

donotsmoke

sheshouldnotsuckherthumb

wearabrace(ifneeded).



thatdoesnotinterpretthedatagiveninthe

table:


incorrectsciencewhereanyoftheyear4bars

havebeenshaded.



wherefewerthanfourof

theyear6barshave

beenshaded.



eatfewersweets/sugaryfoods[given]

eatfruit/vegetables

chewgum.

Additionalguidance

6

1

0

2

3

4

0515

20

25


9/36

TestAquestion

3:Teeth(continued)

Allowableanswers

Question

Requirements

Mark

AwardONEma

rkforadescriptionofthe

cuttingactiono

fincisors:

cut/slice(foo

d).

AwardONEma

rkforbothsentences

correctlyclassified:

Childrenlosetheirfirst

teethandgrow

newteeth.

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

Humanteethca

nreproduce.

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

3d 2/2a

3e 2/2a

1m 1m

ON


chisel/chop/snip

rip/tear/shred/gnaw.


incorrectscienceidentifyingthefunctionof

molars:

crush/grind/chew.



identifyingafunctionofa

llteeth:

grip/holdfood

breakupfood

bite.



givingaphysicaldifferenc

ebetweenincisor

andmolarteeth:

incisorteetharesmaller(thanmolars)

incisorteethhaveafla

tfront.

Additionalguidance

Whenapplyin

gthismarkscheme,pleasealso

refertotheGeneralguidancegivenonpages1and2.

True

False

7


10/36

TestAquestion4:Earth,SunandMoon

Allowableanswers

Question

Requirements

Mark

AwardONEma

rkforallthreeobjects

correctlyclassified:

AwardONEma

rkforanindicationthat

theyarespheric

al:

theyaresph

eres.

AwardONEma

rkfor:

AwardONEma

rkfor:

TheMoonorbitstheEarthonceevery

2730days

(inclusive)/month/four

weeks.

AwardONEma

rkforcorrectlyestimating

thetimeatplac

eAontheglobeas

between11.3

0amt

o1.3

0pmi

nclusive:

midday/noon

12pm

12oclock.

4a 4/4a

1/2c

4b 4/4a

4c 4/4c

4d 4/4d

4e 4/4c

1m 1m 1m 1m 1m

ON


(likea)ball

3Dcircle.

ON


31days.

ON


12am

12.



theyareround/circles

(likea)melon/pea/pop

pyseed[given].



thatdoesnotincludeunits:

28.

Donotgivecreditforar

esponsethatincludes

incorrectscience:

1am.

Additionalguidance

8

Object

Whatitmodels

melon

pea

poppyseed

Earth

Sun

Moon

spintheEarthon

itsaxis


11/36

TestAquestion5:Keepingcool

All

owableanswers

Question

Requirements

Mark

AwardONEma

rkfor:

AwardONEma

rkfor:

melting

melt(s).

AwardONEma

rkfor:

Thetableshowsthattheiceis

insulatedbytheplasticbagssothat

theicechangestowatermoreslowly.

AwardONEma

rkfor:

0C

5a 1/2c

5b 3/2d

5c 3/1b

5d 3/2c

1m 1m 1m 1m



liquefies[describesthe

formationofaliquid,

butthisoccurswithotherprocessesaswell].

Additionalguidance

Whenapplyin



9

aprediction


12/36

TestAquestion6:Strawsounds

Allowableanswers

Question

Requirements

Mark

AwardONEmarkfortwocorrectresponses

[givenineither

order]:

thestraw/th

ecut(straw)

theair/wind.

AwardONEma

rkfor:

pitch.

Givecredit

foracorrectresponsethat

goesbeyond

thekeystage2programme

ofstudy:

frequency.

AwardONEma

rkforanindicationthata

longerstrawcreatesalowernote/sound,

and/orashorterstraw

createsahigher

note/sound:

thelongerthestraw,

thelowerthe

note

itishigherw

henthestraw

isshort

thelongeststraw

makesthelowest

noise.

6a4/3e,g

6b 4/3f

6c 4/3f

1m 1m 1m

ON


plastic/paper

hermouth/lips.

ON


alongstraw

makesalow

sound

ashortstraw

makesahighsound

.



breath/voice

bitsyoucutout

eardrum[doesnotvib

ratetoproducethe

sound]

sound/airwaves

blowing.



thatisarestatementorrepetitionofthefirst.


incorrectscience:

volume.



tone[referstothequalityofthesound]

note[mayrefertodura

tionorpitchofsound].


incorrectscience:

thelongerthestraw,thelouder/softerthe

sound

thelongerthestraw,thelongerthenote.

Additionalguidance

10


13/36

TestAquestion6:Strawsounds(continued)

Allowableanswers

Question

Requirements

Mark


differentpeoplewillblow

indifferent

ways:

theywillnotknow

iftheirresultsare

causedbythelengthofthestraw

or

bythewayeachpersonblew

somepeoplemightblow

harderthan

others

theywillnotallblow

thesame

theymightblow

atdifferentspeeds.


onepersonmig

htblow

differentlyeach

time:

oneperson

willnotbeabletoblow

exactlythesameeachtime

theymightblow

harderonsome

strawsthan

others.

6di

1/2d

6dii

1/2d

1m 1m



thatreferstotheindepen

dentvariable:

thestrawsarealldiffe

rentlengths.



referringonlytobreathing,nottoairentering

thestraw:

differentpeoplehave

differentbreathing

peoplebreatheatdifferenttimes.



referringtotheamounto

ftimethatan

individualblowsinthestraw:

theycanblowfordifferentlengthsoftime.



thatreferstotheindepen

dentvariable:

thestrawsarealldiffe

rentlengths.



referringonlytobreathing,nottotheair

enteringthestraw:

shemightrunoutofbreath

shemightbreathedifferentlyeachtime.



referringtotheamounto

ftimetheindividual

blows:

shemightnotbeable

toblowforaslong

intothelaststraw.

Additionalguidance

Whenapplyin



11


14/36

TestAque

stion7:Seedlings

Allowableanswers

Question

Requirements

Mark

AwardONEmarkfor:

condensatio

n.

AwardONEma

rkforaresponseindicating

thatfoodforgrowthisproducedinthe

leaves:

leaves.

AwardONEmarkforanunderstanding

that(young)plantsneedlightwhenthey

starttogrow:

becausethe

(young)plantsneedlight

becausegro

wingplantsneedlight(to

makefood)

plantsuselighttomakefood.

Givecredit


goesbeyond


ofstudy:

tophotosyn

thesise.

7a3/2d,e

7b 2/3b

7c 2/3a

1m 1m 1m

ON

Emarkmaybeawardedforaresp

onse

tha

tacknowledgesthatfoodforgrowth

isp

roduced(toalesserextent)inoth

er

gre

enpartsoftheplant:

stem/stalk.

ON

Emarkmaybeawardedforaresp

onse

tha

tdescribeslightgoingthroughthe

clearplastic,

butdoesnotindicateth

at

the

plantuses/needsit:

becauseitletslightin

lightgoesthroughtheclearplastic

sothe(sun)lightgoesthrough

sotheplantgetslight.

ON


for(sun)light

light.



thatdescribescondensation:

thewatervapourturn

sbacktoliquidwhen

itcoolsdown

liquidisation/liquidising.


incorrectscience:

roots

flowers/petals.


incorrectscience:

sotheseedscanseet

helight

soitcangetfoodfromthelight.



sotheseedlingscang

row

tokeepitwarm

soyoucanseethroug

hittocheckthem.

Additionalguidance

12


15/36

TestAquestion7:Seedlings(continued)

Allowableanswers

Question

Requirements

Mark


therootstakeup/soakupwaterand/or

minerals:

therootsab

sorbwater/minerals

theytakeupmoisture.

7d 2/3c

1m

ON


therootsabsorb/getnutrients

theycarrywater

theydrain/take/draw

waterfromthe

soil.


incorrectscienceindicatin

gthattherootgives

theyoungplantfood:

theytake/sendup/brin

gitfood

theyfeedit

theygather/absorbfood.


incorrectscienceindicatin

ganactive

anthropomorphicmechanism:

therootscollect/gather/drink/suck/pullup

water.



indicatingasupportingfunctioninwhich

anchoringworksinconju

ctionwiththestem:

therootskeepthepla

ntupright.



thatimpliestherootsanchortheplanttothe

ground:

theyholditinthegro

und[given].



wheregoodnessisused

inplaceof

nutrients,waterorminerals:

theytakeupgoodnes

s.



thatdoesnotrecogniset

heroleoftheroots:

nutrients/moisture(in

thesoil).

Additionalguidance

Whenapplyin



13


16/36

TestAquestion8:Remotecontrol

Allowableanswers

Question

Requirements

Mark

AwardONEmarkfordrawingabarto

8stepsforthe

tracingpaper:


thebookisthic

kerthantheothermaterials

beingtested:

theotherm

aterialsarethinnerthan

thebook

ithasmore

layers(thantheothers).

AwardONEmarkfor:

hisstepsare

bigger

8a 1/2h

8b 1/2d

8c1/2m

1/2d

1m 1m 1m

ON

Emarkmaybeawardedforabar

drawnbetween7.5and10steps

exclusively.

ON

Emarkmaybeawardedforaresponse

ind

icatingthatthebookismadeofm

ore

thanonematerial.

ON


absoluteresponse:

thebookis(too)thick.


incorrectsciencedrawing

abarto8stepsatthe

positionsforthefoilorthebook.



indicatinganotherpropertyofthebookthatis

different:

itishard/heavy.

Additionalguidance

14


17/36

TestAquestion8:R

emotecontrol(continued)

Allowableanswers

Question

Requirements

Mark


Ruthshouldmeasurethedistancein

standardisedunits:

shecoulduseatapemeasure/metre

ruler

sheshouldmeasureincm.

AwardONEmarkforaresponsethat

identifiesthere

lationshipbetweenthe

transparency/opacityofthematerialsand

how

welltheremoteworks:

theremote

didnotworkwithfoiland

thatisopaq

ue

lightpasses

throughtheclearplastic

bagandthe

clearplasticbagletthe

remotecontrolworkfroma

longway

away

theremote

didnotworkwithfoil

becausefoilwillnotletlightthrough

themoretransparentthematerial,the

bettertheremoteworks

materialsth

atletmorelightthrough

willturntheTVonfromf

urtheraway.

8d1/2m

8e 1/1a

4/3b

1m 1m

ON


ind

icatingthatRuthshouldmeasurethe

dis

tanceormakesureeachstepisan

eq

ualdistance:

shecanmeasurehowfarbackshe

goes

shecanmakesureherstepsaret

he

samesize.

ON


ind

icationthatrepeatingthetestwill

improveaccuracyorallow

Ruthtofind

ou

tanaverage.

ON


thatindicatestransparentmaterialsh

ave

themoststeps(beforetheremotestops

wo

rking)orthatopaquematerialsdidnot

wo

rkwithanysteps:

theobjectswith0stepswereallop

aque

allthematerialsthatletlightthro

ugh

allow

moresteps

thebagissee-throughandtook

25stepsuntiltheTVswitchedoff.



makeitafairtest

shemakessureeverythinghasthesame

thickness(soitisafairtest)

replacethebatterieseachtime

measurethethicknessofthematerials

[ensuresthetestisfair,notaccurate]

checkherresults[doe

snotnecessarilyimply

thetestisrepeated]

makesureherstepsarethesame[couldrefer

tothenumberofstep

sratherthanthesize]

gobackthesamedistance.


incorrectsciencereferringtothethicknessof

thematerials:

theclearplasticbagis

thinsolightcanshine

throughit[transparen

cyisnotdependent

onthethicknessofth

ematerial].

Donotgivecreditforaresponsedescribing

thetransparencyofone(ormore)ofthe

objectswithoutstatingtheeffectonthe

remotecontrol:

theclearplasticbagistransparent(andfoil

isopaque)

whenthebookwasinfrontoftheremote

itblockedthelight.



thatcorrectlyidentifieshowwelltheremote

workswithone(ormore)oftheobjectswithout

relatingthistothetransp

arencyoftheobject:

theremotecontroldidnotworkwithfoil.

Additionalguidance

Whenapplyingthismarkscheme,pleasealso

refertotheGeneralguidanceg

ivenonpages1and2.

15


18/36

TestAquestion9:Yeast

Allowableanswers

Question

Requirements

Mark

AwardONEmarkfor:

dissolving

dissolves.

Givecreditforacorrectresponsethat

goesbeyond


ofstudy:

asolution

itisasolute

.

AwardONEmarkforclassifyingallthree

statementscorrectly:

Agasisproduc

edbytheyeast.

...........

Areversiblecha

ngehashappened............

Theballoonisflexible.

...........

AwardTWOm

arksforageneral

comparisondescribingtherelationship

betweenthetemperatureofthewater

andthetimet

akenfortheballoonto

standup:

thehigherthetemperature,

theless

timeittakesfortheballoontorise

thelowerthetemperature,

thelonger

ittakesfortheballoontostandup.

Ifyouareunab

letoawardtwomarks,

awardONEmarkfortwospecific

comparisonsdescribingtherelationship:

ahightemp

eraturetookashorttime

andalowt

emperaturetookalong

timeforthe

balloontostand.

9a 3/2a

9b 3/2f

9c 1/2j

1m 1m 2m 1m

Marksmaybeawardedforresponsesgiving

therelationshipbetweenthetemperature

of

thewaterandtheeffectonthetime

takenfortheballoontostandup:

thewarmerthewater,thequicke

rthe

balloonrises

thehotterthewater,thequicker

gas

wasproduced.



itsinkstothebottom

mixing[given].


incorrectsciencesuggestingthattheyeastrises:

thehotterthewaterthequickertheyeast

rises.


incorrectscience,changingoneorboth

variables:

thehotterthewater,thesmallertheballoon

thehotterthewater,

theshortertimethe

balloonstaysupfor.

Additionalguidance

or

16

(continued)

(continued)

True

False

True


19/36

TestAquestio

n9:Yeast(continued)

Al

lowableanswers

Question

Requirements

Mark

AwardONEm

arkforasinglecomparison

ofthevariables:

ahottemperaturemadetheballoon

standupin

ashorttime

theballoon

tookalongtimetostand

upwhenth

etemperaturewaslow.

AwardONEm

arkfor:

no

AND

aresponseexp

lainingthatthemixturesat

20Cand30C

didnotcausetheballoon

tostandupmostquickly:

theballoon

blew

upmorequicklyat

50C

theballoon

blew

upfasteratahigher

temperaturethan20Cor30C

ittooklong

erforgastobeproduced

at20Cand

30Cthanat50C.

9c

(continued)

9d 1/2k

1m

Aw

ardONEmarkfor:

no

AN

D

aresponseindicatingthattheyeastworks

qu

ickestat50Coratahighertemperature

than20Cor30C:

itworksquickestat50C

at30Cittook16minutesbutit

only

took4minutesat50C.

ONEmarkmaybeawardedifneithe

rbox

istickedbutacreditworthyexplanation

indicatesthatthepupilbelievesthe

informationfromt

hecookbookisnot

supportedbytheresultsoftheinvestig

ation.



thatdoesnotinterprettheresults:

at3Cittook52minutes,andat50Cit

took4minutes.

Donotgivecreditifthe

yesboxisticked.



thatgivesacontinuousv

ariablerelationship

betweenthetimetostandupandthe

temperatureofthewater:

thehotterthewater,

thequickerittakesto

stand[doesnotgiveexamplesfromthe

results].



thatonlyrestatestheres

ultsinthetable:

Iknowthisbecauseitwas4minsat50C,

18minsat20Cand

16minsat30C.



itiseasierathighertemperatures[itis

ambiguousastowha

teasierrefersto]

itisbestat50C[bestmustbedefined].

Additionalguidance



ivenonpages1and2.

17


20/36

TestBquestion

1:Medicinesanddrugs

Al

lowableanswers

Question

Requirements

Mark

AwardONEm

arkforanindicationthat

plasticislesslikelytobreakthanglassor

thatplasticislighterthanglass:

ifthebottle

isdropped,plasticwillnot

break,

butglassmay

plasticislig

hter.

Givecredit


goesbeyond


ofstudy:

glassismorebrittle

plasticisles

sdense.

AwardONEm

arkforallthree

statementscor

rect:

Med

icinesareno

tdrugs

becauseal

ldrugsare

harm

ful.

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

Med

icinescanhave

badef

fectsonhumans.

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

Ifyouea

ta

balance

ddiet,you

willnevernee

dtotakemed

icine.

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

1a 3/1a

1b 2/2g

1m 1m

ONEmarkmaybeawardedforan

ab

soluteresponse:

plasticwillnotbreak

plasticisalightmaterial.

ONEmarkmaybeawardedfora

responsethatdescribesaconsequen

ceof

plasticbeinglighter/lesslikelytobreak:

plasticbottlesareeasiertotransp

ort.

ONEmarkmaybeawardedfor:

plasticischeaper.

Donotgivecreditforaninsufficientresponse:

plasticisstronger[theplasticmaynotbe

stronger]

plasticisbetter

plasticisbrown

itcanberecycled.

Donotgivecreditforaninsufficientresponse

thatimplicitlyreferstoglass:

itwillbreak/smash.

Additionalguidance

18

False

True

False


21/36

TestBques

tion2:Watercycle

Allowableanswers

Question

Requirement

s

Mark

AwardONEm

arkforcorrectlycompleting

bothrowsofthetable:

AwardONEm

arkfor:

AwardONEm


therainwillbe

comesolidorwillchange

tosnow

orhail:

itwillfreeze

itwillturnintosnow/hail/ice

itwillsolidify.

2a 3/2d

2b 3/2e

2c 3/2b

1m 1m 1m


therain/waterwillcooldown[given].


thatisambiguous:

thewaterbecomeshard.

Additionalguidance



ivenonpages1and2.

19

3Isthechangereversible?

Change

evaporation

condensation

yes

yes


22/36

TestBquestion3:Magnets

Allowableanswers

Question

Requirement

s

Mark

AwardONEm

arkforeitherofthe

following:

ironor

steel.


goesbeyon

dthekeystage2

programme

ofstudy:

nickel

cobalt

nickel/coba

lt/iron/steelalloys.

AwardONEm

arkforacorrectlydrawn

barto60piecesofpaperformagnetC:

3a 4/2a

3b 1/2h

1m 1m

ONEmarkmaybeawardedforan

un

ambiguousindicationof60piecesof

pa

performagnetC,suchasalined

rawn

at

60.

ONEmarkmaybeawardedforaba

rthat

is

drawnnomorethan2mma

boveor

be

low

thelineindicating60pieceso

f

pa

per.


thatdoesnotnameametal:

amagneticmetal

ametalthatisattractedtoamagnet.

Additionalguidance

20


23/36

TestBquestion

3:Magnets(continued)

Allowableanswers

Question

Requirement

s

Mark

AwardONEm

arkfor:

D

AwardONEm


thestrongestmagnethasthemostpieces

ofpaperbetweenthemagnetandthe

nail:

magnetDworkedthroughthemost

piecesofpaper

magnetD/ithad100piecesofpaper

whichwas

morethanalltheothers

thestronge

rthemagnetthemore

piecesofpaperbetweenthemagnet

andthenail.

3ci

1/2j

3cii

1/2j

1m 1m

ONEmarkmaybeawardedforares

ponse

th

atrecognisesthatthestrongestm

agnet

at

tractsthenailthrough100pieces

of

pa

perbutdoesnotexplicitlysaythis

was

th

elargestamountofpaper:

(itheld)100piecesofpaper.


wherethehighestbaronthechartisnot

interpretedtomeanlarg

estamountofpaper:

thebiggertheresult

onthechart,the

strongerthemagnet

thebarishighest

thenumberismore

itwentupto100.


thenumberofpieces

ofpapertellsyou.

Additionalguidance



ivenonpages1and2.

21


24/36

TestBquestion4:Solids,liquidsandgases

Allowableanswers

Question

Requirement

s

Mark

AwardONEmarkforallthreepartsof

thebottlelabe

lledcorrectly:

AwardONEmarkfor:

AwardONEmarkfor:

4a 3/1e

4b 1/2l

4c3/2b,d

1m 1m 1m


thatdoesnotidentifyea

chchildbutonlygives

thecorrecttimestakentosmellthevarnish:

Additionalguidance

22

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

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

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

solid

gas

liquid

5

12

20

ice

water

watervapour

solid

liquid

gas

B

C

A


25/36

TestBquestion4:Solids,liquidsandgases(continued)

Allowableanswers

Question

Requirements

Mark

AwardTWOm

arksforallfourrows

correctlycomp

leted:

Ifyouareunabletoawardtwomarks,

awardONEm

arkforanytwoorthree

rowscorrect.

4d 3/1e

3/2d

2m 1m

Additionalguidance

Whenapplyingthismarkscheme,pleasealsorefertotheGeneralguidanceg

ivenonpages1and2.

23

Question

Whichformsduring

evaporation?

Whichkeepsitsown

shape?

Whichformsduring

condensation?

Whichspreadsouttofill

anysizedcontainer?

Solid

Liquid

Gas

or

)


26/36

TestBque

stion5:Seaturtles

Allowableanswers

Question

Requirements

Mark

AwardONEm

arkfor:

reproductio

n

AwardONEm

arkforaresponsethat

indicatesthep

redatorswillfinditmore

difficulttosee

theturtles:

itisdarkso

predatorsarelesslikelyto

seethem

theyarehidden(bythedarkness)

theycanno

tbeseen.

AwardONEm

arkfortwolines(withor

withoutcorrec

tarrowheads)showingthe

correctpathoflight.Thelinesmustgo

fromt

heMoo

ntotheseaandfromt

he

seatotheturt

leseyes/body:

(continued)

5a 2/1a

5b 2/5b

4/3d

5ci

4/3c

4/3a,d

1m 1m 1m

O

NEmarkmaybeawardedforaresponse

im

plyingthepredatorswillnotbepresent

fo

rthehatching:

thepredatorsareasleep

thepredatorswillcomeinthemo

rning.

O

NEmarkmaybeawardedforone

co

ntinuousreflectedorcurvedlinee

ven

if

thearrowheadisincorrectormissing:

(continued)


theywillnotgeteaten[given]

becauseitisdark[given]

predatorswillnothu

ntthem.


whereonlyonelineisdrawn:

(continued)

Additionalguidance

24


27/36

TestBquestion5:Seaturtles(continued)

Allowableanswers

Question

Requirements

Mark

AwardONEm

arkfortwoarrowheads

showingthed

irectionoflighttravelfrom

theMoontot

heseaandfromt

heseato

theturtle:

AwardONEm

arkforbothcorrectboxes

ticked:

5cii

4/3d

4/3a,c

5d 2/5a

1m 1m

O

NEmarkmaybeawardedforaco

rrect

arrowheadonacontinuousreflectedline:

Donotgivecreditfora

ninsufficientresponse

wherethedirectionoftravelisshownonlyby

onenon-reflectedarrow

:

Additionalguidance


25

turnoffstr

eetlights

intowns

stopcarsd

riving

nearthebeach


28/36

TestBques

tion6:Treeshadow

A

llowableanswers

Question

Requirements

Mark

AwardONEm

arkfor:

AwardONEm

arkforanawarenessthat

lightcannotp

assthroughthetree.

The

responsemustmakereferencetothe

blockedlightoropacity:

thetreeis

opaque

thelightcannotpassthroughthetree

thetreestops/blocksthelight

thelightis

blocked.

AwardONEm

arkfor:

6a4/3a,b

6b 4/3b

6c4/4b,c

1m 1m 1m

Donotgivecreditfora


thatdoesnotnecessarilyexplainshadow

formation:

thelightgoesround

thetree

lighttravelsinstraightlines

thelightcannotgetpastthetree[itpasses

oneitherside]

thetreeissolid[aso

lidobjectcanbe

transparent]

thetreeisinthewayofthelight[doesnot

necessarilymeanitisblockingthelight]

lightcannotgetbehindthetree

thesuncannotgetthroughthetree[does

notrefertolight].

Additionalguidance

26

TheEarthspins

onitsaxis.

s e:


29/36

TestBquestion6

:Treeshadow(continued)

A

llowableanswers

Question

Requirements

Mark

AwardONEm


theSunhasset:

theSunha

sset

itisnight(time)

theEarthh

asrotatedandnow

theSun

isbelowth

ehorizon.

AwardONEm

arkforanytimebetween

12.4

5pma

nd

1.1

5pmi

nclusive:

1pm.

6d4/4b,c

1/2l

6e 1/2j

1m 1m

O

NEmarkmaybeawardedfor:

theSunhasgonedown/in

thereisacloudinfrontoftheSun

thereisnoSunshining

shadowsonlyformw

henthereislight

itistoodark(forashadow

tofo

rm)

thereisnolight(toforma

shadow).

O

NEmarkmaybeawardedforaco

rrect

re

sponsethatdoesnotagreewitht

he

p

munits:

13:10[givenin24-hourtime]

1oclock.

Donotgivecreditfora

responsethatincludes

incorrectscienceindicat

ingexplicitlythatthe

Sunmovesorhasdisappeared:

theSunhasmovedaway

thereisnoSun.

Donotgivecreditfora


theEarthhasspun/rotatedaround[itmay

havespuncompletelyaround]

theMoonisout

itwastoolate.

Additionalguidance


27

e s e h? e: ] e t


30/36

TestBquestio

n7:Travellingsounds

A

llowableanswers

Question

Requirements

Mark

AwardONEm

arkforidentifyingthe

numberofmaterialstested:

3.

AwardONEm

arkforidentifyingthe

dependentvariable(DV):

whetherornotthesoundcouldbe

heard(thro

ughthecups)

whetherth

esoundtravelsthrough

differentm

aterials

thevolumeofthesound

how

much

soundcouldbeheard

ifshecouldhearthem.

AwardTWOmarksforidentifyingany

twooftheindependentvariables(IV)in

theinvestigation:

thelength

(ofcotton,nylonandwire)

thetypeofmaterial/string/line.

Ifyouareuna

bletoawardtwomarks,

awardONEm

arkforidentifyinganyone

IVintheinves

tigation.

7a 1/2j

7b 1/2d

7c 1/2d

1m 1m 2m 1m

O


sound

Icanhearyou

hearing(sound).

M

arksmaybeawardedfor:

materials/fabric

amountofmaterial.

Donotgivecreditfora


thatnamesthethreematerials:

cotton,nylon,wire.

Donotgivecreditfora

responsethatincludes

incorrectscienceimplyin

ganotherfactorhas

beenmeasured:

plasticcups

materials.

Donotgivecreditfora


thatidentifiesaquestionforanalternative

investigation:

whichmaterialdoesthesoundtravelthrough

howlongdoesittak

etohearthesound?

Donotgivecreditfora


thesound

theline[couldrefertolengthortightness]

thecups

tightness/looseness/straightness[given]

thickness.

Donotgivecreditfora


thatidentifiesafactorJillmayhavechanged

butdidnotrecordinhe

rnotes:

volume

amountofsound.

Donotgivecreditfora

secondresponsethat

isarestatementorrepe

titionofthefirst.

Additionalguidance

or

28

se:

se se se:

se


31/36

TestBquestion7:Travellingsounds(continue

d)

A

llowableanswers

Question

Requirements

Mark

AwardONEm

arkforrecognisingthe

importanceofvaryingonlytheIV:

soyouwo

uldknow

whichfactorhad

aneffect

becausesh

ewouldnotknow

what

hadaneffect

ifyouchangeeverythingitwillnotbe

afairtest

tomaketh

etestfair

soyoucan

comparetheresults.

AwardONEmarkforaresponserecognising

thattheresultsarenotreferredtoor

interpreted:

shehasno

ttalkedaboutwhatshehas

foundout/whathappened/herresults

itdoesnot

explainwhatwascompared

itdoesnotmentiontheresults.

7d 1/2a

7e 1/2j

1m 1m

O


soyouknow

whichoneisbest

theotherthingsmightinfluence

the

results

soyoucanseewhichoneworks

soyoucanmakesureyourconclusion

istrue.

O

NEmarkmaybeawardedfora

responsewhichimpliesthereisnot

enoughinformationorrecognisesthat

b

estisnotdefined:

itdoesnottelluswhy(itisbest)

thereisnotenoughdetail

noinformation

sheneedsmoreinformation

thereisnoevidence.

O


responseindicatingthattheconclusion

d

oesnotdescribeorinterpretallthe

resultsoftheinvestigation:

itdoesnottellyouaboutwireor

nylon

shecanhearthroughtwoofthe

m

wireworkedtoo.

Donotgivecreditfora

ninsufficientrespons

soyoudonotgetco

nfused/mixedup

soitdoesnotgetto

ocomplicated

soitisnotafairtest.

Donotgivecreditfora


thatreferstotheaccuracyoftheresults:

togetthecorrectresults

soyoucanhavethe

rightresult

incaseyoumakeamistake

youmightgowrong

soyoucanbeaccurate.

Donotgivecreditfora


statingaconclusion:

cottonwasthebest

materialforsoundto

travelthrough.

Donotgivecreditfora


therearenoscientificwordsinit

itwasveryshort

itisjustanopinion.

Donotgivecreditfora


indicatingthattheinitia

linvestigationwas

flawed:

shechangedthreethingsinsteadofone.

Additionalguidance

Whenapply

ingthismarkscheme,pleasealsorefertotheGeneralguidancegivenonpages1and2.

29

se:

uts

des se


32/36

TestBques

tion8:Spacestation

A

llowableanswers

Question

Requiremen

ts

Mark

AwardONEm


exerciseimpro

ves/maintainsthefitness

and/orthehe

althoftheastronauts:

toexercise

theirmuscles

tokeepth

emh

ealthy/fit.


goesbeyon

dthekeystage2programme

ofstudy:

tomaintainbonedensity/thickness

tostoptheirbonesgoingweak

tostopthemg

ettingbloodclots

toimprove

theircirculation/heart.

AwardONEm


gravitationala

ttraction/weightpullsthe

crumbstothe

ground:

gravitypullsthecrumbstotheground

(onEarth)

thepullof

gravityisstrongerthanin

space

becauseth

ecrumbsweighmoreon

Earth.

AwardONEm

arkforbothstatements

correctlyclass

ified:

Driedfoodisbetterthanfreshfoodto

takeintospac

ebecauseit...

weighsmore.

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

decaysmores

lowly.

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

8a 2/2h

8b 4/2b

1/2l

8c 1/2l

2/5f

1m 1m 1m

O


tokeep/maketheirlegsstrong

sotheydonotgainmuchweigh

t/fat

sotheydonotbecomeweak.

O


(becauseof)gravity/weight

crumbsarepulledtotheground

/Earth.

Donotgivecreditfora


theyareweightless

thereisnogravity(inspace)

[technicallythereisgravityinspaceand

theseresponsesdonotexplainwhyastronau

needtoexercise]

sotheyarereadyto

gointospace

sotheyarethin/they

needtobethin.

Donotgivecreditfora

responsethatinclud

incorrectscience:

gravitypushesdown

onEarth.

Donotgivecreditfora


whichistechnicallywrong:

thereisnogravityin

space.

Additionalguidance

30

True

False

des

nse


33/36

TestBquestion8:Spacestation(continued)

A

llowableanswers

Question

Requiremen

ts

Mark

AwardONEm

arkfor:

waterand

nutrients

AwardONEm

arkforaresponse

indicatingtha

ttherootanchorstheplant

inthesoil:

therootsanchortheplant

theyholditinplace.

8d 2/3a

8e 2/3c

1m 1m

O


responseindicatingasupportingfunction

o

ftherootswhichmayworkin

conjunctionwiththestem:

theysupport/stabilisetheplant

theyhold/keeptheplantdown/in

place

theymaketheplantstandstraig

ht/

upright.

O


responseindicatingthattherootscould

storewater:

therootscanholdwaterforthe

plant

whenitisdry.

Donotgivecreditfora

responsethatinclud

incorrectscience:

therootstakeupfood.

Donotgivecreditfora

ninsufficientrespon

indicatingthatrootsabsorbwater/nutrients

fromthesoil.

Additionalguidance

Whenapply

ingthismarkscheme,pleaseals

orefertotheGeneralguidancegivenonpages1and2.

31

nse

nse ci

tly

des

nse:

on.

des

nse o

uld

nse:

reas


34/36

TestBque

stion9:Periwinkles

A

llowableanswers

Question

Requiremen

ts

Mark

AwardONEm

arkforaresponsegivinga

differencebetweentheshellsofthetwo

periwinkles:

Aisalighter/differentcolour

theshape

(ofshell)

thespirals

areindifferentplaceson

theshells.

AwardONEm

arkforaresponsethat

indicatestheshellprotectsorsupports

theperiwinklesbody:

theshellp

rotectstheperiwinkle

itsupportstheperiwinkle.

AwardONEm

arkforaresponsethat

indicatesana

veragesizeisneededor

thatthereliab

ilityofhisresults/test/

conclusionsw

illbeimproved:

ifhemeas

uresonlyoneortwoshells,

theymaybesmallerthantheaverage

becauseif

heonlymeasuredone/a

few

periwinkleshellsit/theymightbe

biggertha

ntheothersandthenhis

resultswillbeuseless

tochecktheresults.

9a 1/2f

9b 2/2e

2/5b

9c 1/2g

1m 1m 1m

O


responsethatreferstoshellAasit

:

ithasalightershell.

O


itstopstheperiwinkledryingou

t

itkeepstheperiwinklesafe

itshelterstheperiwinkle

ithelpsthemt

ohide(fromp

red

ators).

O

NEmarkmaybeawardedforind

icating

w

hyitisusefultohaveashellthat

ishard

o

rdifficulttobreakandimpliesprotection:

theshellwillnotbreakwhenacrab

triestocrackitopen.

O


responsethatindicatesthereisava

riation

in(thesize/typeof)theperiwinkles

hells

ineacharea:

toseeiftheyarealldifferent/allthe

same(sizeorage)

theremaybemorethanonetyp

eof

periwinkle.

O


responseindicatingthattheaccuracyof

thetestwouldimprove:

theaveragewillbemoreaccura

te.

Donotgivecreditforaninsufficientrespon

thatdoesnotdescribehowtheshellsare

different:

itisadifferentsize[given]

itisadifferenttype

(ofshell).


thatiscorrectforshellBbutdoesnotexplic

refertoshellB:

ithasadarkershell.

Donotgivecreditforaresponsethatinclu

incorrectscience:

ithelpstheperiwink

letomove

[giventhatitdoesnot].


theshell/itishard/keepsitwarm

itcannotbreakeasily

[givesonlyapropertyoftheshell]

theshellistheperiw

inkleshouse

sotheperiwinkledoesnotgetwet/rained

Donotgivecreditforaresponsethatinclu

incorrectscience:

tomaketheresultsdifferent.


indicatingthattheshellsfromoneplacesho

bethesame:

tomakesuretheyarethesame.


togettheright/correctresults

toseeiftheperiwinklesinthedifferentar

aredifferent.

Additionalguidance

32

nse:

nse

ped n

se:


35/36

TestBquestion9:Periwinkles(continued)

A

llowableanswers

Question

Requiremen

ts

Mark

AwardONEm


theperiwinklesmaynotbeabletosurvive

inadifferent

place:

theperiwinklesmaynotbeadapted/

suitedtolivinginadifferentplace

theperiwinklesmaynotliveiftheyare

putsomew

herenew.

Givecred

itforacorrectresponsethat

goesbeyo

ndthekeystage2

programm

eofstudy,implyingthatan

environme

ntwillbeadverselyaffected

bytheintroductionofanew

species:

itmaydep

letetheenvironment/food

chainofexistingorganisms.

AwardONEm


(someof)the

rockpoolwaterhas

evaporated:

someofthewater/itevaporated

thewater

haschangedtowatervapour.

9d 2/5a

9e 3/2d

1/2l

1m 1m

O


sotheydonotdie

theywillbesaferintheirownh

abitat

theyareusedtotheirhabitat/ho

me/

wheretheylive

itistheirhabitat

theconditionscouldbedifferen

t.


itiscruelnottoput

themback[does

notexplainwhyitis

cruel]

itiswheretheylive

[given]

itistheirhome

itiswheretheirfam

ilyis

sotheydonotgetlost

becausetheywilldie[needtoqualify].


indicatingthatthewaterhasleakedorseep

outofthepool[givent

hatithasnot].


thereislesswater

thewaterislower

thecrabdrankit.

Additionalguidance

Whenapply

ingthismarkscheme,pleaseals

orefertotheGeneralguidancegivenonpages1and2.

33


36/36

29 Bolton StreetLondon W1J 8BT

Telephone: 08700 60 60 40

Minicom: 020 7509 6546

Fax: 020 7509 5908

Email: [email protected]

Website: www.naa.org.uk/tests

For more copies

QCA Orderline, PO Box 29, Norwich NR3 1GN

Tel: 08700 60 60 15 Fax: 08700 60 60 17

Email: [email protected]

QCA/06/2795 275366

Documents

2007 KS2 SCIENCE Mark Scheme