Download [PDF] April 2018 CAIE P2 Mark Schemes 0846 Science Cambridge Primary Checkpoint

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[PDF] April 2018 CAIE P2 Mark Schemes 0846 Science Cambridge Primary Checkpoint.pdf | Plain Text

This document consists of 14 printed pages. IB18 05_0846_02/4RP © UCLES 2017 [Turn over Cambridge International Examinations Cambridge Primary Checkpoint SCIENCE 0846/02 Paper 2 April 2018 MARK SCHEME Maximum Mark: 50 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the details of the discussions that took place at an Markers’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the End of Series Report. Cambridge will not enter into discussions about these mark schemes.

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 2 of 14 Annotations and abbreviations / OR alternate responses for the same marking point ( ) the words or units in brackets do not need to be stated Accept an acceptable response Do not accept indicates an incorrect response that would contradict another otherwise correct alternative Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent working is correct ora or reverse argument note provides extra information when necessary

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 3 of 14 Question Answer Marks Further Information 1(a) blood bones fat other muscles skin 1 more than one answer circled = 0 marks 1(b) When Oliver runs the muscles in his legs move because the muscles contract . 1 Accept shorten / relax / lengthen / stretch / move our bones Question Answer Marks Further Information 2 fertilisation 2 germination 4 pollination (1) seed production 3 1 all correct = 1 mark

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 4 of 14 Question Answer Marks Further Information 3 glass block magnifying glass microscope mirror telescope 1 more than one answer circled = 0 marks Question Answer Marks Further Information 4(a) it is camouflaged 1 4(b) they are covered in hair to keep cool they are covered in hair to keep warm they are grey to keep cool they sometimes flap to keep cool they stay still to keep warm 1 more than one answer circled = 0 marks

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 5 of 14 Question Answer Marks Further Information 5(a) This process is melting . 1 5(b) This process is evaporation . 1 5(c) This process is freezing . 1 Accept solidification 5(d) This process is condensation . 1 Question Answer Marks Further Information 6(a) Pull is an example of a force . 1 Accept different types of pulling force e.g. action force / muscular force / elastic force 6(b) (idea that the string) changes shape / goes floppy / goes down / moves down / loosen(s) / slacken(s) / relax(es) / not tight / less tight / not stretched (anymore) (because) less force / less pull (force) 2 correct change = 1 mark correct reason = 1 mark Accept Mia isn’t pulling the string / weaker force / Mia is not using force

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 6 of 14 Question Answer Marks Further Information 7(a) conclusion data evidence prediction results 1 more than one answer circled = 0 marks 7(b) forcemeter light meter ruler  sound meter stop clock  weighing scales 2 each correct tick = 1 mark three ticks, two correct = 1 mark three ticks, one correct = 0 marks more than three ticks = 0 marks

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 7 of 14 7(c) Label the axes of the graph correctly. Measure from the same point to the end of the shadow each time.  Push the stick into the ground before measuring. Use a different stick in the ground each time. Use a ruler to draw the table of results. 1 more than one tick = 0 marks

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 8 of 14 Question Answer Marks Further Information 8 keeps the blood moving pumps blood to the feet moves oxygen to the brain breathes out carbon dioxide 1 more than one answer circled = 0 marks Question Answer Marks Further Information 9(a) Saturn 1 9(b) 0 1 2 3 4 1 more than one answer circled = 0 marks

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 9 of 14 Question Answer Marks Further Information 10(a) condition number of woodlice dark and dry 3 dark and moist 6 light and dry 1 light and moist 2 1 all correct = 1 mark 10(b) 0 condition number of woodlice 1 3 5 7 2 4 6 8 dark and dry 9 10 dark and moistlight and moist light and dry 2 all bars drawn correctly = 1 mark (plotting must touch the line) all bars labelled correctly = 1 mark Accept label inside the bar Accept any order ecf from (a) Question CPS00680 Answer Marks Further Information 11 The lamp produces ray(s) of light. The surface of the book reflect(s) the light. The light reaches Carlos and enters his eye(s) . 2 three words correct = 2 marks two words correct = 1 mark one word correct = 0 marks

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 10 of 14 Question Answer Marks Further Information 12(a) flowering germination pollination seed dispersal seed production 1 more than one answer circled = 0 marks 12(b) spreads the seeds / disperses the seeds /allows the seeds space (to germinate) / prevent overcrowding / to stop too many seeds in one place 1 Accept ‘plants’ or ‘poppies’ for seeds Accept idea of reducing competition Question Answer Marks Further Information 13(a) A – kidney B – bladder 2 each correct answer = 1 mark 13(b) The function of organ A is to filter blood / clean the blood . The function of organ B is to store urine . 2 each correct answer = 1 mark

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 11 of 14 Question Answer Marks Further Information 14(a) breathing in / inhaling 1 Accept through her lungs / breathes / to her lungs 14(b) cough medicine painkiller rash cream teething gel vitamins 1 more than one answer = 0 marks Question Answer Marks Further Information 15(a) 25 cm 3 / the same 1 15(b) 20 C / the same 1 15(c) to make investigation or results (more) reliable 1 Accept to check results 15(d) more can dissolve at (higher temperatures) 1

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 12 of 14 Question Answer Marks Further Information 16(a) The air inside the recorder vibrates . 1 16(b) put fingers on the holes / remove fingers from the holes / use a longer recorder / use a shorter recorder 1 Question Answer Marks Further Information 17 baking bread burning a match frying an egg melting ice cream 1 more than one answer = 0 marks

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 13 of 14 Question Answer Marks Further Information 18(a) iron 1more than one answer = 0 marks 18(b) soluble materials insoluble materials carbon dioxide magnesium sulfate gold hydrogen iron marble mercury paraffin 2each correct column = 1 mark 18(c) is it solid, liquid or a gas? does it have a high or a low melting point? 2

0846/02 Checkpoint Primary Science – Mark Scheme April 2018 PUBLISHED © UCLES 2018 Page 14 of 14 Question Answer Marks Further Information 19(a) As the distance increases the brightness of the lamp decreases . 1Accept goes down / becomes less / becomes dim / lowers / dimmers / is less / dims / goes low 19(b) 0 20 40 60 80 1more than one answer circled = 0 marks 19(c) Graphite is a good electrical conductor . 1 Question Answer Marks Further Information 20(a) rat snake dragonfly frog sardine tuna 1any two correct = 1 mark 20(b) grasshopper rat mosquito dragonfly animal plankton sardine 1any two correct = 1 mark