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This document consists of 19 printed pages and 1 blank page. IB18 10_0846_01/5RP © UCLES 2018 [Turn over   Cambridge International Examinations Cambridge Primary Checkpoint SCIENCE 0846/01 Paper 1 October 2018 45 minutes Candidates answer on the Question Paper. Additional Materials: Pen Calculator Pencil Ruler READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name in the spaces at the top of this page. Write in dark blue or black pen. DO NOT WRITE IN ANY BARCODES. Answer all questions. The number of marks is given in brackets [ ] at the end of each question or part question. You should show all your working in the booklet. The total number of marks for this paper is 50.

2 © UCLES 2018 0846/01/O/N/18 1 Oliver is learning to organise animals using keys. (a) He organises four insects W, X, Y and Z. W X YZ Put the letters W, X, Y and Z in the correct place on the key. insects 2 or 4 wings? 0 wings 4 2 number of wings? are the wings patterned? yes no [2]

3 © UCLES 2018 0846/01/O/N/18 [Turn over (b) Look at the picture of a frog and a newt. frognewt Oliver wants to ask a question to separate them into different groups. Which question does he use? Circle the correct answer. Does it have an eye? Does it have four legs? Does it have a mouth? Does it have a patterned body? Does it have a tail? [1]

4 © UCLES 2018 0846/01/O/N/18 2 Safia owns a motor car. The diagram shows some of the materials used to make her car. glass windscreen plastic seats steel car body rubber tyres containing air (a) Which labelled material in the diagram is attracted to a magnet? [1] (b) Give one reason why glass is used to make the car windscreen. [1] (c) Steel is used to make the car body because it will not rust and is quite cheap. Give one other reason why steel is suitable to make the car body. [1] (d) The car engine burns gasoline. What type of change is the burning of gasoline? Circle the correct answer. irreversible reversible Explain your answer. [1]

5 © UCLES 2018 0846/01/O/N/18 [Turn over 3 Class 6 go to their local park to pick up litter. Class 6 do not put this litter in the bin. They take the litter to a recycling centre. Write two reasons why they do this. reason 1 reason 2 [2] 4 There are five stages in the lifecycle of a flowering plant. Three of these stages are  seed production  seed dispersal  germination. What are the other two stages? and [2]

6 © UCLES 2018 0846/01/O/N/18 5 Chen investigates sound. material alarm clock Chen Chen measures the volume of sound the alarm clock makes. He puts different materials between him and the alarm clock. (a) What apparatus does Chen use to measure the volume of sound? [1] (b) Complete the sentence. The volume of sound is measured in . [1] Choose from these words. decibels hours metres newtons seconds (c) Chen’s alarm clock makes a high sound. Complete the sentence. A high sound and a low sound are different in . [1] Choose from these words. length loudness pitch softness volume

7 © UCLES 2018 0846/01/O/N/18 [Turn over 6 Priya is investigating seed germination. She has four dishes. She adds some seeds to each dish. Look at the dishes in the pictures. C seeds with light and no water D seeds in a dark cupboard and no water A seeds with light and water B seeds in a dark cupboard with water (a) Priya thinks that only the seeds in dish A will germinate. Is she correct? Explain your answer. [2] (b) Priya repeats the investigation in the winter. The seeds do not germinate. Explain why. [1]

8 © UCLES 2018 0846/01/O/N/18 7 A candle is made from a solid called wax. (a) At the top of the candle solid wax changes into liquid wax. What is the name of this process? [1] (b) Solid wax changing into liquid wax is a reversible change. Explain why. [1] (c) Some of the liquid wax changes into a gas. What is the name of this process? [1] flame liquid wax solid wax wick

9 © UCLES 2018 0846/01/O/N/18 [Turn over 8 Blessy puts two magnets near each other. N N S S The magnets repel each other. (a) Blessy wants to make these magnets attract each other. What does she do? [1] (b) Blessy uses one of the magnets to attract paper clips. This magnet only attracts five of the paper clips. The other paper clips have not been attracted. Give two reasons why these paper clips are not attracted to the magnet. reason 1 reason 2 [2]

10 © UCLES 2018 0846/01/O/N/18 9 Pierre and Mike investigate shadows. Pierre makes a shadow. Mike draws around the shadow. Mike Pierre shadow A (a) Explain why there is a shadow. [1]

11 © UCLES 2018 0846/01/O/N/18 [Turn over Pierre makes another shadow. Mike draws around this shadow. Here are their results. outline of shadow B outline of shadow A (b) Describe two differences between shadow A and shadow B. difference 1 difference 2 [2] (c) Why is there a difference between shadow A and shadow B? [1]

12 © UCLES 2018 0846/01/O/N/18 10 Rajiv draws some organs found in the human body. A DB EC F (a) Write the name of each organ. One has been done for you. A B C liver D E F [2]

13 © UCLES 2018 0846/01/O/N/18 [Turn over (b) Which organ is found below the waist and near the back of the body? waist Circle the correct answer. A B D E F [1] 11 Snakes have skeletons. Write two ways the skeleton helps the snake. 1 2 [2]

14 © UCLES 2018 0846/01/O/N/18 12 The table shows the properties of some substances. substance state at room temperature colour does the substance dissolve in water? chalk solid white no iron sulfate solid green yes magnesium sulfate solid white yes Hassan has a mixture of chalk, iron sulfate and magnesium sulfate. He wants to separate the mixture. He adds the mixture to water and stirs it thoroughly. He then filters this mixture using this apparatus. residue mixture of water, chalk, iron sulfate and magnesium sulfate filtrate ................................ ................................ ................................ (a) Complete the labels on the diagram of the apparatus. [3] (b) Which substance is found in the residue? [1]

15 © UCLES 2018 0846/01/O/N/18 [Turn over (c) Which substances are found in the filtrate? [1] 13 Mia makes a model of the Sun and the Earth. yellow balloon to model the Sun green balloon to model the Earth Mia wants to move the yellow and green balloons. She wants to model what happens to the Sun and the Earth. Describe what she does to the balloons. [2]

16 © UCLES 2018 0846/01/O/N/18 14 Ahmed, Carlos and Yuri investigate forces. A piece of material is tied to the middle of the rope. Ahmed, Carlos and Yuri all pull the rope with the same force. (a) Which direction will the material move? Circle the correct answer. [1] (b) The boys repeat the investigation. Only Ahmed and Carlos pull the rope. They pull the rope with the same force. Which direction will the material move? Circle the correct answer. [1] not move not move material rope Carlos Ahmed Yu r i material rope Carlos Ahmed

17 © UCLES 2018 0846/01/O/N/18 [Turn over (c) What is the unit for force? Circle the correct answer. friction gravity kilogram mass newton [1] 15 Complete the crossword about food chains. 1. An animal that hunts another animal. (8 letters) 2. A food chain always starts with this. (8 letters) 3. An animal that gets eaten by another animal. (4 letters) 4. An animal that eats plants or other animals. (8 letters) 2 3 1 4 [3]

18 © UCLES 2018 0846/01/O/N/18 16 Jamila investigates the time it takes for different substances to dissolve in water. In each experiment she • uses 100 cm 3 of water and adds one of the substances • stirs the mixture until the substance dissolves • stirs the mixture at the same speed. Jamila repeats the experiment with different substances. She plots her results as a bar chart. 0 20 40 60 1 g sugar1 g indigestion tablet 2 g salt substance0.5 g aspirin time in seconds80 100 (a) Jamila has not done a fair test. Use information from the bar chart to explain why. [1] (b) Which substance dissolves in the shortest time? [1] (c) How long does it take to dissolve the indigestion tablet? seconds [1]

19 © UCLES 2018 0846/01/O/N/18 (d) Jamila predicts that as the mass of aspirin increases, the time taken to dissolve it increases. She tests her prediction by doing experiments. Tick () the three factors she keeps constant. mass of aspirin speed of stirring temperature of water time to dissolve volume of water [2]

20 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 trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cie.org.uk after the live examination series. 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 department of the University of Cambridge. © UCLES 2018 0846/01/O/N/18 BLANK PAGE