[PDF] Cambridge Primary Checkpoint - Science (0843) June 2009 Paper 2 MS.pdf | Plain Text

This document consists of 9 printed pages and 3 blank pages. IB09 06_0843_02/3RP © UCLES 2009 [Turn over *5572187516* *5572187516* UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International Primary Achievement Test SCIENCE 0843/02 Paper 2 May/June 2009 MARK SCHEME Maximum Mark : 50 IMPORTANT NOTICE Mark Schemes have been issued on the basis of one copy per Assistant examiner and two copies per Team Leader.

2 © UCLES 2009 0843/02/M/J/09 Science mark schemes – Achievement Test Guidelines for marking test papers These mark schemes are designed to provide you with all the information \ necessary to mark the Primary Achievement Tests. As far as possible, the mark schemes giv\ e you full guidance regarding acceptable and unacceptable alternative answers and, where app\ ropriate, include examples of student work to illustrate the marking points. Howe\ ver, it is not always possible to predict all the alternative answers that may be produced by \ students and there could be places where the marker will have to use their professional jud\ gement. In these cases it is essential that such judgement be applied consistently. The guidelines below should be followed throughout ( unless the mark scheme states otherwise ):  A correct answer should always be awarded full marks even if the working\ shown is wrong.  Where more than one mark is available for a question the mark scheme exp\ lains where each mark should be awarded. In some cases marks are available fo\ r demonstration of the correct method even if the final answer is incorrec\ t. The method marks can be awarded if the correct method is used but a mistake has bee\ n made in the calculation, resulting in a wrong answer. Method marks can also be \ awarded if the calculation is set up and performed correctly but incorrect values h\ ave been used, e.g. due to misreading the question or a mistake earlier in a seri\ es of calculations.  If a question uses the answer to a previous question or part question th\ at the student got wrong, all available marks can be awarded for the latter question if\ appropriate calculations are performed correctly using the value carried forward. P\ laces where such consideration should be made are indicated in the mark schemes. In\ these cases, it is not possible to provide all the alternative acceptable answ\ ers and the marker must follow the student’s working to determine whether credit \ should be given or not.  Half marks should not be awarded and at no point should an answer be awa\ rded more than the maximum number of marks available, regardless of the quali\ ty of the answer. Similarly, negative marks should never be awarded.  If the student has given more than one answer or has supplied additional\ redundant information the marks can be awarded if all the answers given are correc\ t and non- contradictory (even if some are irrelevant). However, if any incorrec\ t answers/information are given the marks should not be awarded, similarly\ if additional information contradicts the first answer the marks should not be awarded\ (marks for correct working out can still be gained).  If the answer line is blank but the correct answer is given elsewhere, e\ .g. an annotation on a graph or at the end of the working out, the marks can be\ awarded provided it is clear that the student has understood the requirements of\ the question.

3 © UCLES 2009 0843/02/M/J/09 [Turn over  If the student has produced redundant additional working after the corre\ ct answer has been reached the marks can be awarded provided the extra work does n\ ot contradict that already done.  Each question and part question should be considered independently and m\ arks for one question should not be disallowed if they are contradicted by workin\ g or answers in another question or part question.  Any legible crossed-out work that has not been replaced can be marked; b\ ut if work has been replaced the crossed-out part should be ignored.  Diagrams, symbols or words are acceptable for explanations or responses.\  Where students are required to indicate the correct answer in a specific\ way, e.g. by underlining or ticking boxes, marks should be awarded for any unambiguou\ s indication, e.g. circling, crossing boxes etc.  Any part of speech is acceptable, e.g. refraction, refracting, refracted\ , and singular and plural forms are acceptable unless otherwise stated, e.g. alveolus, \ alveoli.  Spelling errors should not be penalised where the meaning is clear. In \ the case of specific scientific vocabulary, misspellings should only be accepted if \ the student’s response is phonetically equivalent to the correct answer. For questions involving quantities, e.g. length, mass, time or money, co\ rrect units must be given in the answer. The table shows acceptable and unacceptable versio\ ns of the answer 1.85m. Correct answer Also accept Do not accept Units are not given on answer line and the question does not specify a unit 1.85m Correct conversions provided that the unit is stated, e.g. 1m 85cm 185cm 1850mm 0.00185km 1.85 185m If the unit is given on the answer line, e.g. ……………m …..1.85…… m Correct conversions, provided the unit is stated unambiguously, e.g. …..185cm….. m …..185……m …..1850.… m etc. If the question states the unit that the answer should be given in, e.g. “Give your answer in metres” 1.85m 1.85 1m 85cm 185; 1850 Any conversions to other units.

4 © UCLES 2009 0843/02/M/J/09 Note: if the answer line is left blank but the correct answer is given e\ lsewhere on the page it can be marked correct if the units match those on the answer line or are\ unambiguously stated. Each question on the test paper has a box beside it for the teacher to r\ ecord the mark obtained. It is advisable to use these boxes so that students, and othe\ rs looking at the test papers, can clearly see where the marks have been awarded. The page tot\ al boxes can be used to aid addition. It should also be noted that marking in red ink and using the mark boxes\ is an essential requirement for the Achievement tests.

5 © UCLES 2009 0843/02/M/J/09 [Turn over Question Mark Answer 1a 4Ps1 1 1 b 4Ps4 1 The sound gets softer / quieter. Allow: the sound decreases. Do not allow lower. c 4Ps5 1 Pitch higher d 1 5cm / 5 Units given on graph Question Mark Answer 2 3Cm1 3 Belt bendy Ladder rigid Towel absorbent Umbrella waterproof 3 marks all correct 2 marks 2/3 correct 1 mark 1 correct Question Mark Answer 3a 5CS4 1 Thermometer b 5CS4 1 120ºC 100ºC 80ºC 60ºC 40ºC 20ºC0ºC


6 © UCLES 2009 0843/02/M/J/09 Question Mark Answer Feature Scales Feathers Backbone Mammal
Fish

Birds

4a 4Be1 2 Reptile

2 marks 3/4 lines correct 1 mark 1/2 lines correct b 4Be1 1 Vertebrates c 4Be1 2 Large feet, stores water in fat in hump, long eyelashes, 1 mark for each correct line. Allow stores food in hump. Do not allow stores water in hump. Question Mark Answer 5a(i) 5Cs2 1 steam/water vapour a (ii) 5Cs2 1 evaporation Accept boiling a (iii) 5Cs2 1 condensation b (i) 5Cs2 1 salt b (ii) 5Cs2 1 add water Question Mark Answer 6a 3Pf1 1 shoe table Newton meter b 3Pf2 1 B c 3Pf4 1 Friction

7 © UCLES 2009 0843/02/M/J/09 [Turn over Question Mark Answer True False


7a 3Bh1,2 2
3/4 correct 2 marks 1/2 correct 1 mark b(i) 3Bh2 1 Girl 1 b(ii) 3Bh2,3 1 Puts on too much weight/ tooth decay Question Mark Answer 8a 4Cs1 2 gas solid liquid 3 correct 2 marks 1/2 correct 1 mark Solid Liquid Gas


b 4Cs1 4
1 mark for each

8 © UCLES 2009 0843/02/M/J/09 Question Mark Answer 9a 4PE5 1 Any reference to Steel being a magnetic material. b 4PE4 1 None will be picked up. Allow no attraction between magnet and clips. c 4PE5 1 It is a magnet (do NOT accept ‘it is magnetic’). d 4PE5 1 It is not magnetic. Question Mark Answer 10a(i) 6sp3 1 Water level/number of beans a(ii) 6sp3 1 Temperature, light Both needed for mark b 6sc4 1 Heat, light Both needed in correct order Question Mark Answer 11a 5PL5 5PL6 2 Year Day Earth rotates 24 timesMoon orbits the earth Earth orbits the sun once Earth rotates once on its axis 1 Mark each b 5PL5 1 Days and nights would get shorter

9 © UCLES 2009 0843/02/M/J/09 Question Mark Answer 12a 5Bp2 1 Fruit b 5Bp2 3 Taken away by animals Blown away by the wind Thrown out when fruit dies Carried by water 3 marks for 3/4 correct 2 marks for 2 correct 1 mark for 1 correct c 5Bp6 1 germination Question Mark Answer 13a 5PL4 1 Student must make reference to rotation of Earth. Any mention of Sun moving, explicitly or implied scores 0 b 5PL3 2 Length of shadow (allow size but not thickness) and position (allow angle) 1 Mark each Accept changes different shades of grey.

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12 Permission to reproduce items where thir d-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to t race copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opport\ unity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a depa\ rtment of the University of Cambridge. 0843/02/M/J/09 BLANk PAGE