Download [PDF] April 2020 CAIE P2 Mark Schemes 0846 Science Cambridge Primary Checkpoint

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This document has 12 pages. Blank pages are indicated. 05_084 6_02/4RP ©UCLES 2020 [Turn over Cambridge Primary Checkpoint SCIENCE 0846/02 Paper 2 April 2020 MARK SCHEME Maximum Mark: 50 Published This mark scheme is published as an aid to teachers and learners, to indicate the requirements of the examination. However, we have not been able to adjust it to reflect the full range of answers that would have been seen as a part of the normal moderation and marking process, and it does not necessarily contain all the possible alternatives that might have arisen. Cambridge will not enter int o discussions about the mark scheme.

0846/02 Checkpoint Primary – Mark Schem e April 2020 PUBLISHED © UCLES 2020 Page 2 of 12 General guidelines on marking Many descriptive answers can be expressed in a variety of ways. Professional judgement can be used in these cases, providing it matches the marking points and further information in the mark scheme. Answers may have words spelt incorrectly. Credit is normally given for phonetically correct answers, unless the word has a scientifically different meaning. For example, where the answer should be antennae, credit will be given for antena but not for anthen (too close to anther). Only the science is being assessed, so answers do not need to be grammatically correct. Significant figures will be indicated in the question or in the mark scheme. Unless specified all marking points are independent. Annotations and abbreviations / OR alternate responses for the same marking point ( ) brackets the words or units in brackets do not need to be stated, for example, (recycles or releases or provides) minerals = minerals scores the mark 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. Full marks can still be achieved even with answers that are ignored. Note provides extra information when necessary

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 202 0 Page 3 of 12 Question Answer Marks Further Information 1(a) reproduction / reproduce 1 1(b) 1 more than one answer circled = 0 marks Question Answer Marks Further Information 2 material at room temperature material is a ….. solid liquid gas (carbon dioxide) ( ) gasoline  mercury  nitrogen  3 each correct row = 1 mark more than one tick for each material = 0 marks for that row

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 202 0 Page 4 of 12 Question Answer Marks Further In formation 3 We must recycle less / more of our rubbish. We must increase / reduce energy consumption. We must drop / pick up litter. We must destroy / protect habitats. We must clean / pollute rivers . 2 all five correct = 2 marks three or four correct = 1 mark one or two correct = 0 marks Question Answer Marks Further Information 4 any two from thunder is always after lightning (idea of) the time difference between thunder and lightning varies the time for the thunder decreases then increases 2 each correct answer = 1 mark Accept any specific examples e.g. the shortest time difference between the lightning and thunder was at 11:09 Accept the storm is moving closer then further away Question Answer Marks Further Information 5 A stem B leaf C root 1 all correct = 1 mark

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 5 of 12 Question Answer Marks Further Information 6 process change of state gas to liquid condensation gas to solid evaporation liquid to gas freezing liquid to solid meltin g solid to gas solid to liquid 4 every correct match = 1 mark if a process has been matched to more than one change of state then = 0 marks for that process Question Answer Marks Further Information 7(a) muscle (s) 1 Accept correctly named m uscle 7(b) 1

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 6 of 12 Question Answer Marks Further Information 8(a) does not dissolve (in water ) 1 Ignore does not mix with the water 8(b) any one from (idea that) the orange juice does not leak out / the plastic holds the orange juice the plas tic does not dissolve into the orange juice 1 8(c) any one from non-poisonous does not break if dropped low density / light (weight) can be moulded into shape 1 Accept it is see -through 8(d) it can break easily / shatters if dropped 1 Accept he avier

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 7 of 12 Question Answer Marks Further Information 9(a) 3 four correct = 3 marks two or three correct = 2 marks one correct = 1 mark 9(b) (seed) dispersal eat the seeds / move the seeds from one place to another / seeds stick to their fur / (idea of) of e gestion of seed 2 each correct answer = 1 mark Question Answer Marks Further Information 10(a) A B C D E 1 more than one circled = 0 marks 10 (b) A B C D E 1 more than one circled = 0 marks 10 (c) light intensity mete r 1 Accept other correct named pieces of equipment that may vary depending on location

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 8 of 12 Question Answer Marks Further Information 11 (a) (plate B) (idea of) less fat 1 if plate A chosen = 0 marks Ignore healthier Accept more vitamins / more miner als Accept named vitamins e.g. contains vitamin C 11 (b) high in sugar 1 Accept medium salt Question Answer Marks Further Information 12 The Earth spins on its axis.  The Earth only spins in the morning . The Earth orbits the Sun. ( ) The Earth spinning on its axis causes day and night.  The Earth takes 24 hours to orbit the Sun. The Earth takes a year to spin on its axis . The Earth moves very close to the Sun and then stops. The Earth takes a year to orbit the moon. The Ear th takes 24 hours to spin on its axis.  The Earth spins to the left and then to the right. 3 each correct tick = 1 mark if more than three ticks are used, follow the guidance: four ticks, three correct = 2 marks four ticks, two correct = 1 mark five ticks, three correct = 1 mark other combinations of four or five ticks = 0 marks six or more ticks = 0 marks

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 9 of 12 Question Answer Marks Further Information 13 (a) 3 1 Accept rabbit, weasel and owl 13 (b) 2 1 Accept weasel and owl 13 (c) 2 1 Acc ept rabbit and weasel Question Answer Marks Further Information 14(a) air vibrate(s) / air vibration 1 14 (b) blow(s) harder 1

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 10 of 12 Question Answer Marks Further Information 15(a) dissolves 1 15 (b) colourless 1 Accept clear / transparent / white Ignore the same colour as water 15 (c) salt is soluble in water / salt is dissolved in the water 1 Accept idea that the salt passes through the (filter paper) with the water Accept because the salt has dissolved Do not accept because salt is very small it will go through the filter 15 (d) any two from heat the solution evaporate water a (white) solid is formed 2 Accept put the dish in the sun Accept boil Accept salt is left behind / salt is formed Accept heat to get a (white) residue = 2 marks

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 11 of 12 Question Answer Marks Further Information 16(a) cm 1 Accept mm 16 (b) faster it falls / quicker it falls / less time it takes (to fall) 1 Accept shorter the time 16 (c) 4 (cm) 1 Accept 2.4 16 (d) any two from number of paperclips / ma ss of model seed material of model seed amount of wind length of drop length of seed / width of seed shape of wings number of wings 2 Accept other valid answers

0846/02 Checkpoint Primary – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 12 of 12 Question Answer Marks Further Information 17 Light comes from the Sun . This li ght hits the Earth and is reflected . This light reaches the astronaut on the Moon. The astronaut sees the Earth because the light enters her eyes . 2 three correct = 2 marks one or two correct = 1 mark