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This document consists of 9 printed pages and 3 blank pages. 11_0843_01/MS © UCLES 2008 [Turn over *5912845245 * UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International Primary Achievement Test SCIENCE 0843/01 Paper 1 October/November 2008 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 2008 0843/01/MS/O/N/08 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 been 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 inco\ rrect values have been used, e.g. due to misreading the question or a mistake earlier\ in a series 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).

3 © UCLES 2008 0843/01/MS/O/N/08 [Turn over  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.  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.

4 © UCLES 2008 0843/01/MS/O/N/08 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. 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. It is also u\ seful to use the boxes because it makes the process of entering the data into the analysi\ s tool easier. The page total boxes can be used to aid addition but care must be taken not \ to accidentally enter these values into the analysis tool. Finally, it is advisable to use a pen of a different colour to that used\ by the students so that the marks and comments can be clearly seen. It should also be noted tha\ t marking in red ink and using the mark boxes is an essential requirement for the Achieve\ ment tests.

5 © UCLES 2008 0843/01/MS/O/N/08 [Turn over Question Mark Answer 1 3Bl4 3 Foxglove Rose Sunflower Award one mark for each correctly labelled flower. Question Mark Answer Process Reversible Non- reversible Baking bread
Boiling water
Dissolving salt
2 6Cc1 2 Iron rusting
2 marks if 4 correct, 1 marks if 2/3 correct, Question Mark Answer 3a 4Ps1 1 Any reference to vibrations Do not allow moving or wobbling b 4Ps2 1 Air / gas True False

c 4Ps4 2
2 marks for 3 correct 1 mark for 2 correct 0 mark for 1 correct d 4Ps3 1 The note is quieter or less loud Allow muffled or more difficult to hear. Do not allow reference to pitch.

6 © UCLES 2008 0843/01/MS/O/N/08 Question Mark Answer 4a 3Bh2 1 The rate/speed at which the heart beats. Or The number of heart beats per minute. Candidates answers must mention heart. b 3Bh2 1 The heart beats faster during exercise / running. Allow any reference to body needing increased oxygen. c 3Bh2 1 It will slow down / return to normal. Allow any reference to a decrease. Do not allow it will stop. Question Mark Answer 5a 4Pe1 1 1 mark for a complete circuit diagram with all 4 symbols. M M b 6Pe4 1 Either Bulb gets dimmer Bow tie spins slower c 6Pe1 6Pe2 2 Tick the following:
Steel paperclip
Strip of aluminium foil
Metal split pin 2 mark for all 3 correct. 1 mark for 2 correct. 0 mark for 1 correct.

7 © UCLES 2008 0843/01/MS/O/N/08 [Turn over Question Mark Answer 6 3Cm2, 3Cm4 2 Tick statements:
Steel cans and plastic bottles.
Glass jars and steel lids.
Iron nails and copper nails 2 marks for all 3 correct. 1 mark for 2 correct. 0 mark for 1 correct. Question Mark Answer 7a 5Bp1 1 Reproduction b 5Bp2 1
c 5Bp2 1 Dispersion Allow: Disperse / dispersal d 5Bh5 1 Wind blows the seeds
Question Mark Answer 8a 6Sp1 2 Any two from: volume of water, capacity of pot, temperature of water, make of tablet / same pot 1 mark for each correct answer. Allow other sensible answers. b 6Sc3 1 A ring around the value that corresponds to 0.5 g of table / 100 secs. c 6Sc4 2 200 s (+ or – 10 s) 1 mark for correct answer, 1 mark for the unit (accept seconds)

8 © UCLES 2008 0843/01/MS/O/N/08 Question Mark Answer True False



9 6Pf1 6Pf2 3
3 marks for all 5 correct answers 2 marks for 4 correct 1 mark for 3 correct 0 marks for 2 or less correct Question Mark Answer 10 3Cm1 3 Material Use Property Flexible Transparent Hard Shiny Earring Catapult Wall Window Stone Glass Diamond Rubber 1 mark for each correct match Question Mark Answer 11ai 3Bh3 1 1 Feature: I ate lots of sugary cakes Explanation: become overweight / tooth decay OR Feature: I forgot to clean my teeth Explanation: tooth decay Allow get fat / teeth rot Not toothache Not bad teeth aii 3Bh2 1 Playing football b 3Bh2 1 Vitamin C Question Mark Answer 12 5Cs3 3 The can of drink was cold so the water vapour in the air condensed on the outside of it. 1 mark for each correct answer

9 © UCLES 2008 0843/01/MS/O/N/08 Question Mark Answer 13a 4Cs1 1 Yes b 4Cs1 1 No Question Mark Answer 14a 6Be3 1 Grass / plants b 6Be3 1 Predator = fox Prey =rabbit Accept appropriate other names e.g. wolf c 6Be3 1 Sun / sunlight If answer contains anything else as well as Sun mark x e.g. Sun + Water Sun + Soil Question Mark Answer 15a 4Pe4 2 S N S N N S NS NS S N N S S N Give 2 marks for all three correct. 1 mark for 2 correct. 0 mark for 1 correct. b 4Pe4 1 Repel Allow repulsion c 4Pe4 1 Attract Allow attraction

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12 Permission to reproduce items where third-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. 0843/01/MS/O/N/08 BLANK PAGE