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This document consists of 15 printed pages and 1 blank page. IB17 05_0846_01/6RP © UCLES 2017 [Turn over Cambridge International Examinations Cambridge Primary Checkpoint SCIENCE 0846/01 Paper 1 April 2017 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. 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 a 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 Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes.

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 2 of 16 Question Answer Marks Further Information 1 1. lung(s) 2. brain 3. kidney(s) 4. liver 2 four correct = 2 marks two or three correct = 1 mark one correct = 0 marks Question Answer Marks Further Information 2 add another cell  add another lamp  make the wires longer make the wires shorter   remove one cell 2 each correct tick = 1 mark three ticks two correct = 1 mark two incorrect ticks = 0 marks

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 3 of 16 Question Answer Marks Further Information 3 seed dispersal germination pollination 3 each correct answer = 1 mark Question Answer Marks Further Information 4 Material A is copper . This material is used because it is a good conductor . Material B is plastic . This material is used because it is a good insulator . 3 all four correct = 3 marks two or three correct = 2 marks one correct = 1 mark

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 4 of 16 Question Answer Marks Further Information 5(a) substance state of matter at room temperature solid liquid gas carbon dioxide   gasoline    mercury    water  ()  wood   2 two or more ticks in a row is incorrect for that substance all four correct = 2 marks two or three correct = 1 mark 5(b) solid (to) liquid 1 both correct and in the correct order = 1 mark 5(c) liquid (to) gas 1 both correct and in the correct order = 1 mark 5(d) liquid 1

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 5 of 16 Question Answer Marks Further Information 6 any two from the Moon the Sun planet(s) moons of Jupiter / satellites of Jupiter / red spot on Jupiter Milky Way stars / constellation(s) asteroids comets rings of Saturn 1 two correct = 1 mark Accept two named planets = 1 mark Do not accept Earth

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 6 of 16 Question Answer Marks Further Information 7 have a bath re-use paper  throw away glass bottles and jars turn lights off  use litter bins  2 all three correct = 2 marks one or two correct = 1 mark four ticked three correct = 1 mark two incorrect ticks = 0 marks

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 7 of 16 Question Answer Marks Further Information 8(a) Shadows are made when light is blocked / stopped / obstructed. 1 8(b) During the day shadows change in length / height / position / direction / angle. 1 Accept size Accept (idea of) greyness Accept (idea of) moving

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 8 of 16 Question Answer Marks Further Information 9 any two from (idea of) fat layer for insulation / fat to keep them warm / fat to withstand the cold thick feathers for insulation / lots of feathers for insulation / thick feather layer for insulation claws or nails to grip (the ice) / claws or nails to help them walk on ice oily feathers to make them waterproof flattened wings (flippers) to swim in the water / short wings (flippers) to swim in the water black (back) for camouflage / white (front) for camouflage (when swimming) streamline shape for swimming / aerodynamic shape for swimming sharp beak for feeding or catching fish / long beak for feeding or catching fish webbed feet for (powerful) swimming short legs to walk/waddle on snow/ice 2 each correct answer = 1 mark Answer must include description and explanation of adaptation for mark Accept blubber for fat Accept to keep them warm Do not accept fur If two structural adaptations only given and no reasons e.g. sharp beak and thick feathers then = 1 mark

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 9 of 16 Question Answer Marks Further Information 10(a) to dissolve the salt / as the salt is soluble and the sand is insoluble 1 answer must mention salt Accept to make a salt solution Ignore just to make a solution Ignore to mix Do not accept if answer includes sand being dissolved 10(b) sand 1 10(c) to make the salt dissolve quicker 1 Accept to dissolve the salt better / to help the salt dissolve / so all the salt dissolved 10(d) sand 1

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 10 of 16 Question Answer Mark Further Information 11 Youssef puts the inhaler in his mouth . He presses the inhaler and breathes (in) / inhales . The medicine travels down his windpipe to his lungs . 2 three correct = 2 marks one or two correct = 1 mark Accept breathes in and out / breath (in) Accept air or oxygen enters Question Answer Marks Further Information 12(a) vibrates 1 12(b) higher pitch 1 answer must be comparative 12(c) quieter / softer / less loud / (volume) decreases 1 answer must be comparative

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 11 of 16 Question Answer Marks Further Information 13(a) food chain 1 Do not accept food web 13(b) grass / plant / producer 1 Accept any named plant e.g. carrot 13(c) Only the fox is a predator.  Only the rabbit is a predator. The rabbit and the fox are both carnivores. The rabbit and the fox are both predators. 1 more than one tick = 0 marks Question Answer Marks Further Information 14(a) friction 1 14(b) newton meter / forcemeter 1 14(c) kilogram metre newton 1 more than one circled = 0 marks Accept any indication of the correct answer

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 12 of 16 Question Answer Marks Further Information 15(a) 50 1 Accept any number between 45 and 55 Accept answer in the table 15(b) same result as using red ink / blue ink will travel up to the flower / flower will go blue 1 Accept it takes the same time (as the red ink) Ignore water turns blue / flower changes colour 15(c) flower clear water red ink 1 half the flower shaded (by eye) Accept two three or four petals shaded on the right hand side

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 13 of 16 Question Answer Mark Further Information 16(a) 2 points plotted correctly, (25,55) and (30,50) 2 each point = 1 mark Accept plots + or – ½ a small square Ignore extra points drawn at 35 minutes 16(b) last 3 points joined as a straight line or curve 1 the line must go through all three points ecf from candidates plotting in part (a) but if no plots then no mark for the line Ignore line through point plotted at 35 minutes Do not accept if line goes through the anomalous point at (10,55) 16(c) 10 (minutes) 1

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 14 of 16 Question Answer Marks Further Information 17(a) use a stop watch to measure the time use the same colour material use the same mass of modelling clay  use the same materials   use the same size of material   2 each correct tick = 1 mark three ticks two correct = 1 mark two incorrect ticks = 0 marks 17(b) B 1 Accept 6.2

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 15 of 16 Question Answer Marks Further Information 18 conducts electricity  low melting point shiny  soft soluble in water strong  3 each correct tick = 1 mark four ticks three correct = 2 marks four ticks two correct = 1 mark five ticks = 0 marks

0846/01 Primary Checkpoint Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 16 of 16 BLANK PAGE