KEY STAGE Mark scheme - Online Courses and Exams

1 National curriculum assessmentsScience testsMark scheme for Papers 1 and 22008 ScKEY STAGE3 TIERS3 7KS3 Sc MS1+2 2/1/08 2:49 pm Page 1 IntroductionThe test papers will be marked by external markers. The markers will follow the markscheme in this booklet, which is provided here to inform booklet includes the mark scheme for paper 1 and paper 2 in both structure of the mark scheme for tiers 3 6 and 5 7 The mark scheme for each question shows: the teaching points from the key STAGE 3 programme of study the marks available for each part of the question the total marks available for the question the answer or expected answers, indicated by an asterisk additional guidance to assist markers in making professional a question appears in an identical form in both tiers, the answers to thequestion are given only once in the mark scheme . For clarity, both question numbersare given.

2 The following example, from tier 3 6 paper 2 question 11 and from tier 5 7 paper 2 question 4, illustrates more than one answer is acceptable, this is indicated in the mark scheme by any onefrom . Each possible correct answer is marked with an asterisk. In somecases, alternative answers are indicated by or .22008 KS3 Science Mark SchemeTiers 3 6 and 5 7 IntroductionTier3 65 7Q No114 PartMarkAnswerAcceptAdditional guidancea i3/3da ii3/3da iii3/3f111* it is neutral * any number less than 7any onefrom* they are alkaline oran alkali* they react with the acidaccept a soluble base accept it has a pH above 7 if more than one box is ticked,award no markspecific pH values such as its pH is are insufficientKS3 Sc MS1+2 2/1/08 2:36 pm Page 2In the following example from part aof tier 3 6 paper 2 question 3, an answer giving crushed into powder and smoother and broken into pieces will be awarded twomarks.

3 However, an answer which gives smooth like a pebble will be given only onemark, as smooth and like a pebble are equivalent the following example, from part a of tier 5 7 paper 2 question 11, the statement inbold typein the Additional guidancecolumn is given in order to indicate the generalrequirement of the the Acceptcolumn there may be: examples of answers which are acceptable, although they do not correspond exactlyto the expected answers some examples of higher-level answers, which could be given by higher-attainingpupils answering questions on the lower levels in the the Additional guidancecolumn there may be: answers which are not acceptable a reminder, in questions involving calculations, that consequential marking may be used instructions on action in the event of consequential marking (see page 5) guidance to markers where pupils have not followed the instructions in the guidancea i1/2g2any twofrom* smoother orrounder* broken orcrumbled orcrushedor it was smaller pieces* powder ordust formedaccept it was more like a pebble accept it eroded or it weathered PartMarkAnswerAcceptAdditional guidancea1/2k11* the more cigarettessmoked, the greaterthe number orpercentage that die* the risk increaseswith age orisgreater in older menaccept smoking 5cigarettes a day is lessharmful than smoking 20 accept statements suchas 20 cigarettes a day isworse when you are45 64 than under 45 accept the converseone conclusion should relate to the numberof cigarettes and the other to the effect of agestatements that do not make a generalisation.

4 Such as nearly 1% of men aged 55 64 whosmoke 20 cigarettes a day will die of heartdisease are insufficient2008 KS3 Science Mark SchemeTiers 3 6 and 5 7 IntroductionKS3 Sc MS1+2 2/1/08 2:36 pm Page 3 MarkingThe number of marks available for each part of a question, and the maximum numberof marks for the question as a whole, are shown on the question paper. Every part of a question which has been attempted by a pupil will be marked and the mark for eachpart recorded in the mark box alongside that part. Half marks will not be given in total number of marks awarded for all the parts of questions on a double pagewill be written in the box at the bottom of the right-hand page. In some instances, thiswill be the sum of marks awarded for two questions. The total number of marksobtained on the paper will be recorded on the front of the test total number of marks available is 180 in tier 3 6 and 150 in tier 5 professional judgement in markingThe instructions given in the mark scheme will enable the markers to decide whetherpupils have correctly answered a particular question.

5 However, there will be instanceswhere an answer given by a pupil does not correspond to any of the possible responsesshown in the mark scheme . In such cases, markers will apply their professionaljudgement to decide if credit should be given. They will consider whether the response: is equivalent to those listed conveys the ideas underlying the question as outlined in the statement in bold typein the mark scheme , if one is any doubt persists, markers will consult their supervisors for misspellings of wordsIf a pupil misspells a word, markers will apply the following procedures: if it is clear that the pupil has made a simple error, eg tow for two or Son for Sun , then the incorrect spelling will be accepted and the mark awarded if a pupil misspells a word copied from the text of the question or from a selectiongiven, and the new word does not have any inappropriate meaning, the incorrectspelling will be accepted and the mark awarded if specific scientific vocabulary is required in the answer, a misspelling must, inorder to be creditworthy, be a phonetic equivalent of the required word, with themajor syllables of the correct word represented in the KS3 Science Mark SchemeTiers 3 6 and 5 7 Introduction4KS3 Sc MS1+2 2/1/08 2:36 pm Page 4 Marking lists of alternative answersIn some instances, pupils give more than one answer to a single question.

6 If any of theanswers given is incorrect, the mark will not be awarded, irrespective of the order inwhich the answers are given. In some cases, a correct answer is given alongside otheranswers which, while correct, would be insufficient for the mark. In these cases, themark will be given for the correct questions containing calculationsSome questions require pupils to perform calculations. Where two marks are available,they are advised to show their working. Pupils who do not show their working butgive the correct answer will be awarded full result of one calculation may be required in order to carry out furthercalculations. In such instances: the term consequential marking appears in the Additional guidance a pupil s result for the first calculation is treated as the starting point for the second the pupil is awarded full credit for the second calculation if it is carried outcorrectly, even if the result of the first calculation was answers given in the wrong placeIn some cases, pupils may write correct answers in the wrong part of the will use professional judgement to decide whether a pupil has correctlyunderstood the question and simply written the answer in the wrong place.

7 Similarly,if pupils identify an answer by a cross or other indication when a tick is required,they will be given credit for their levelsLevel threshold tables, which show the mark ranges for the award of different levels,will be available on the NAA website 23 June 2008. The 2008 key STAGE 3 science tests and mark schemes were developed by the National Foundation for Educational Research (NFER) on behalf of KS3 Science Mark SchemeTiers 3 6 and 5 7 IntroductionKS3 Sc MS1+2 2/1/08 2:36 pm Page 5 Mark Allocation Grid: Tier 3 6 TIER 3 6 Paper 1 TIER 3 6 Paper 22008 KS3 Science Mark SchemeTiers 3 6 and 5 7 Introduction6Q12345678910111213141516 TotalQ1234567891011121314 TotalSc1Sc2Sc3Sc424265134111424523146431 4573242171318Sc1Sc2Sc3Sc4213245315166424 123633942829202120 TotalP1 + 271373438 Overall180KS3 Sc MS1+2 2/1/08 2:36 pm Page 6 Mark Allocation Grid.

8 Tier 5 7 TIER 5 7 Paper 1 TIER 5 7 Paper 2 The requirements of the introduction to the programme of study apply across Sc1, Sc2, Sc3 and mark allocation grids on this pair of pages show the context of these questions in relation to Sc1, Sc2, Sc3 and KS3 Science Mark SchemeTiers 3 6 and 5 7 Introduction7Q12345678910111213 TotalQ123456789101112 TotalSc1Sc2Sc3Sc423146431457326651651381 31311Sc1Sc2Sc3Sc441236339428212525265241 61817 TotalP1 + 262293128 Overall150KS3 Sc MS1+2 2/1/08 2:36 pm Page 72008 KS3 Science mark scheme Tier 3 6 Paper One8[Blank page]B1_B2 2/1/08 2:34 pm Page 89 Tier3 6Q No1 PartMarkAnswerAcceptAdditional guidancea i1/2ka ii1/2c2/3a11* A andCany onefrom* grass has germinated orgrown* seeds did not germinate orgrow in Bany onefrom* it would have longer grass* the grass would have grown moreaccept A and C have hair accept something has grown in A and C accept they have hair accept they have longer ormore grass accept B has no hair accept it had more grass ormore hair accept it grew more orfaster accept it would have grown less because it wasover-watered answers may be in either orderboththe letters and the reason are required forthe mark A and C are the same is insufficient seeds need water to grow is insufficient it would be greener is insufficient it would be healthier is insufficientb2/3a1any onefrom* it grew towards the light* that is where the light is coming fromaccept it

9 Grew towards the Sun accept to get light orsunlight accept plants orgrass need light accept to get more Sun because of the sunlight is insufficient to get more heat is insufficientc i2/1cc ii2/3d12* B any twofrom* water* oxygen* mineralsaccept moisture or dampness accept a named mineralaccept nutrients or salts accept, for two marks , two named minerals suchas nitrates and phosphates if more than one box is ticked, award no markdo notaccept plant food or food or nutrition Total62008 KS3 Science mark scheme Tier 3 6 Paper OneB1_B2 2/1/08 2:34 pm Page 910 Tier3 6Q No2 PartMarkAnswerAcceptAdditional guidancea i2/2ma ii2/2m21** reactions are sloweraccept activity of the brain slows down award two marks for all threelines correctaward one mark for any twolines correctif more than one line is drawn from any box, donot credit either lineb i2/2hb ii2/2h11* placenta* amniotic fluidaccept umbilical cord or cord accept fluid accept uterus more blood travels to thesurface of the bodyactivity of the brain slows downsense of pain is reducedreactions are slowera person loses weightskin gets warmera person can get hurtwithout knowing it2008 KS3 Science mark scheme Tier 3 6 Paper OneB1_B2 2/1/08 2.

10 34 pm Page 1011 Tier3 6Q No2 PartMarkAnswerAcceptAdditional guidancec i1/2iBS/2ac ii2/2mBS/2b111* toxic* flammableany onefrom* they can cause brain damage* it makes you less co-ordinated* fumes stop you breathing orchoke you* they prevent you taking in oxygen* you could become addictedaccept inflammable accept it makes you dizzy orlight-headed accept you can hallucinate accept they affect the brain orliver accept they damage your lungs accept it burns your throat accept it is poisonous or they can kill you answers must be in the correct order it damages orharms your body ormakes you ill are insufficient as they are equivalent todangerous they are toxic is insufficient it contains solvents is insufficient they may dissolve chemicals in the body is insufficientTotal82008 KS3 Science mark scheme Tier 3 6 Paper OneB1_B2 2/1/08 2:34 pm Page 1112 Tier3 6Q No3 PartMarkAnswerAcceptAdditional guidancea1/2e1* a ruleraccept a metre rule accept a tape measure cm is insufficient a measuring stick is insufficientb i1/2jb ii1/2j111* 30* A to B: any number from 5 to 15* D to E.