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This document consists of 22 printed pages and 2 blank pages. IB18 10_0846_02/5RP © UCLES 2018 [Turn over   Cambridge International Examinations Cambridge Primary Checkpoint SCIENCE 0846/02 Paper 2 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 0846/02/O/N/18 1 Youssef investigates bouncing objects. Look at the apparatus he uses. spring mass The spring stretches when the mass is added. (a) Which unit is used to measure mass? [1] (b) Draw an arrow on the diagram to show the direction of gravity on the mass. [1]

3 © UCLES 2018 0846/02/O/N/18 [Turn over 2 Lily adds separate samples of solids to water. She stirs the solid and water to see if the solid dissolves. Here are her results. solid colour of solid does the solid dissolve?colour of solution chalk white no no solution is formed copper carbonate green no no solution is formed copper sulfate blue yes blue salt white yes colourless sugar white yes colourless (a) Complete the sentences. Sugar dissolves in water because water is a . Chalk does not dissolve because it is . [2] (b) Copper sulfate is a blue solid. It dissolves in water. What colour solution does it form? [1] (c) Salt dissolves in water to form salt solution. What is the name of the solute in salt solution? [1]

4 © UCLES 2018 0846/02/O/N/18 3 Gabriella collects litter around her school. mixed litterdrink cans (a) Gabriella wants to measure how much litter she has collected. What does she measure? Circle the correct answer. the colour of the litter the mass of the litter the shape of the litter the type of litter where she found the litter [1] (b) Gabriella’s class start a litter campaign. They put posters up and get new litter bins. The litter campaign is successful. Explain how they know the litter campaign has been successful. [1]

5 © UCLES 2018 0846/02/O/N/18 [Turn over (c) Gabriella looks at the things in the mixed litter. She counts them and makes a tally chart. food packets papers plastic bottles straws tissues IIII IIII IIII IIII III IIII IIII IIII IIII IIII IIII IIII IIII II IIII IIII II IIII IIII IIII IIII total = 23 total = ……….. total = ……….. total = 12 total = 20 Complete the sentences. The total for papers is . The total for plastic bottles is . The lowest number is for . [1] (d) Gabriella wants to measure how much litter she has collected. She thinks that counting the number of things in the mixed litter is not a fair test. Explain why this is not a fair test. [1]

6 © UCLES 2018 0846/02/O/N/18 4 Materials have specific properties. Draw a line between each material and the correct property of the material. material property white solid carbon dioxide flammable liquid gasoline melting point of 0 C mercury colourless gas steel silver liquid water attracted to a magnet pink solid [5]

7 © UCLES 2018 0846/02/O/N/18 [Turn over 5 Carlos investigates food chains. He finds this information on the internet.  aphids eat roses  birds eat beetles  beetles eat aphids  roses are producers (a) Write down the food chain using this information. [2] (b) One organism in this food chain is both a predator and a prey. What is the name of this organism? [1]

8 © UCLES 2018 0846/02/O/N/18 6 Here are four electrical circuits. (a) How many lamps in total will light up? Circle the correct answer. 0 1 2 3 4 [1] (b) Draw a circuit symbol for a cell. [1] (c) Lily puts different objects in this electrical circuit. Predict what will happen if the object is a good conductor. Predict what will happen if the object is a bad conductor. [1] cells lamp object

9 © UCLES 2018 0846/02/O/N/18 [Turn over (d) Lily makes this circuit. Lily wants to make the lamp brighter. Which electrical circuit should she make?     Tick () the box next to the correct electrical circuit. [1]

10 © UCLES 2018 0846/02/O/N/18 7 Chen draws a picture of the Earth and rays of sunlight. He writes the letters W, X, Y and Z on the Earth. W X Y Z rays of sunlight Earth (a) Which letters show the places on Earth where it is day and where it is night? Put the letters in the table. day night [1]

11 © UCLES 2018 0846/02/O/N/18 [Turn over (b) Chen draws a diagram to show the position of the Sun and the Earth. Earth Sun Draw the position of the Earth six months later. [1]

12 © UCLES 2018 0846/02/O/N/18 8 Mia heats a substance. She measures the temperature of the substance every minute. Here is a line graph of her results. (a) Name the apparatus Mia uses to measure temperature. [1] (b) Complete the sentence about the patterns in the results. As the time increases, the temperature [2] 50 45 40 35 30 25 20 15 10 5 0 012345678 time in minutes temperature in °C

13 © UCLES 2018 0846/02/O/N/18 [Turn over 9 Priya finds a diagram on the internet. It shows a parent plant making a new plant. shoot in the soilroots grownew plant parent plant What is this life process called? [1]

14 © UCLES 2018 0846/02/O/N/18 10 Pierre is investigating if materials are transparent or opaque. Here is the apparatus he uses. light sourcematerial light meter (a) Pierre has instructions to test each material. They are not in the correct order. A Turn the light source on and read the light meter. B Select the material and place it between the light source and light meter. C Turn the light source off and record the results. D Collect the light source and light meter. Put each letter in the correct order in the table. first instruction last instruction [2]

15 © UCLES 2018 0846/02/O/N/18 [Turn over (b) Look at his results. Which sentences are true? Tick () the boxes next to the two correct sentences. All the materials allow light to pass through. None of the materials allow light to pass through. One material is opaque. Three materials let most light through. Two materials are opaque. Two materials let most light through. [2] ABC DE material light meter reading 0 20 40 60 80 100 120

16 © UCLES 2018 0846/02/O/N/18 11 Oliver finds a picture on the internet. It shows an insect moving from one flower to another flower. AB insect (a) What happens at A? [2] (b) What happens at B? [1]

17 © UCLES 2018 0846/02/O/N/18 [Turn over 12 Aiko hits a tuning fork on a desk. She puts the ends of the tuning fork into a beaker of water. (a) Explain what happens to the water in the beaker. Complete the sentences. The water in the beaker . This is because . [2] (b) Describe how Aiko can increase what happens to the water. [1] tuning fork

18 © UCLES 2018 0846/02/O/N/18 13 Here is a table of melting points and boiling points. material melting point in oCboiling point in oC A – 60 10 B 0 103 C 45 150 D 10 100 E 0 100 (a) Which two materials have a melting point above the melting point of water? Choose A, B, C, D or E from the table. and [1] (b) Which material is water? Choose A, B, C, D or E from the table. [1] (c) The room temperature in a laboratory is 25 oC. Which material is a solid in the laboratory? Choose A, B, C, D or E from the table. [1] (d) The room temperature in a laboratory is 25 oC. Which material is a gas in the laboratory? Choose A, B, C, D or E from the table. [1]

19 © UCLES 2018 0846/02/O/N/18 [Turn over 14 Five friends jump in the air. Explain why it looks like there are ten friends in the picture. [2] water

20 © UCLES 2018 0846/02/O/N/18 15 Carlos investigates how temperature affects the growth of tomato plants. In his investigation he:  puts some tomato seeds in soil  adds water to the seeds  keeps the seeds at different temperatures  measures the height of the tomato plants after 30 days.   (a) What does Carlos use to measure the volume of water accurately? Circle the correct answer. measuring beaker measuring cylinder measuring jug measuring scales measuring spoon [1]

21 © UCLES 2018 0846/02/O/N/18 [Turn over (b) Here are his results. 15 20 25 30 35 40 0 height in cm temperature in ºC 10 ΧΧΧΧΧΧΧ 2 4 6 8 10 12 Complete the sentences about the graph. When the temperature is 10 C the height of the plant is cm. When the temperature is 40 C the height of the plant is cm. The difference in height between 10 C and 40 C is cm. As the temperature increases the height of the tomato plants [2] (c) Carlos only uses one tomato seed for each temperature. He thinks that some of his results may be wrong. What should he do to get better results? [1]

22 © UCLES 2018 0846/02/O/N/18 16 Mia finds a picture on the internet. A and B are muscles. Explain how these muscles make the leg move. [2] A B

23 © UCLES 2018 0846/02/O/N/18 BLANK PAGE

24 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 0846/02/O/N/18 BLANK PAGE