[PDF] Cambridge Primary Checkpoint - Science (0846) October 2017 Paper 2.pdf | Plain Text

This document consists of 22 printed pages and 2 blank pages. IB17 10_0846_02/6RP © UCLES 2017 [Turn over   Cambridge International Examinations Cambridge Primary Checkpoint SCIENCE 0846/02 Paper 2 October 2017 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 2017 0846/02/O/N/17 1 Pierre writes about a food chain. (a) Put the organisms in the correct order in the food chain diagram. [1] (b) What habitat is this food chain found in? [1] Algae get their energy from the Sun. The algae are eaten by a fish. The fish is eaten by a squid. The squid is eaten by a shark.

3 © UCLES 2017 0846/02/O/N/17 [Turn over 2 Lily is separating a mixture of chalk and water. This diagram shows the equipment she uses. Label the diagram. Choose your labels from chalk and water filter funnel filter paper filtrate test-tube ................................. ................................. ................................. .................................................................. [3]

4 © UCLES 2017 0846/02/O/N/17 3 Safia likes to play on a swing. Safia swing She pushes herself using her feet. The swing moves backwards and forwards. After a few seconds the swing gets slower. (a) Write down the name of the force that makes the swing get slower. [1] (b) Safia pushes the swing forwards. What direction is the force that makes the swing get slower? Circle the correct answer. backwards forwards no direction no force same [1]

5 © UCLES 2017 0846/02/O/N/17 [Turn over 4 Human activities affect the environment. (a) What human activity causes river pollution? Circle the best answer. eating sandwiches fishing spilling waste oil throwing stones in the river walking near the river [1] (b) Here is a list of human activities. educating people littering recycling reducing energy use reducing waste How many of these human activities help care for the environment? Circle the correct answer. 1 2 3 4 5 [1] (c) Humans recycle paper. Describe how recycling paper helps the environment. [1]

6 © UCLES 2017 0846/02/O/N/17 5 Youssef is building electrical circuits. Here is his circuit. (a) When the switch is closed the circuit does not work. Why is this? Tick () the correct box. More than one lamp is needed. More than one switch is needed. The cell is the wrong way round. The circuit is not complete. The switch must be open. [1] (b) Youssef builds a new electrical circuit. The lamps do not light up. Why is this? Circle the area in the electrical circuit that is causing the problem. [1]

7 © UCLES 2017 0846/02/O/N/17 [Turn over 6 Humans have organs inside their bodies. Cats also have organs inside their bodies. A C EFDB (a) Write down the name of the organ labelled A. [1] (b) Write down the name of the organ labelled B. [1] (c) Which letter shows the heart? Circle the correct answer. C D E F [1]

8 © UCLES 2017 0846/02/O/N/17 7 Aiko wants to find the boiling point of a flammable liquid. This is the apparatus she uses. beaker heatthermometer test-tube flammable liquid boiling water Aiko does not use a Bunsen burner to heat the water in the beaker. She uses an electrical heater instead. Suggest why. [1]

9 © UCLES 2017 0846/02/O/N/17 [Turn over 8 This question is about the Sun. Complete the sentences. Choose answers from axis orbit day path east south month week north west The Sun appears to rise in the . The Sun appears to go down in the . The Sun does not move. The Earth moves. The Earth spins on its own . The Earth rotates once every . This explains why the Sun appears to move across the sky. [4]

10 © UCLES 2017 0846/02/O/N/17 9 Look at this list of everyday materials. chalk salt copper sand gasoline steel (a) Which of these materials is attracted towards a magnet? [1] (b) Which of these materials is a white solid that is soluble in water? [1] (c) Which of these materials is a liquid at room temperature? [1] 10 Angelique writes five clues about organs in the body. Write down the correct organ for each of her clues. 1 pumps blood around the body organ 2 coordinates all the other organs organ 3 filters the blood and produces urine organ 4 takes in oxygen and removes carbon dioxide organ 5 digests food organ [3]

11 © UCLES 2017 0846/02/O/N/17 [Turn over 11 Rajiv grows tomato plants. He wants to find out how the growth depends on the temperature. He grows seven tomato plants in different temperatures. He measures the height of the tomato plants after 30 days. He draws a line graph. 0 0 1 2 3 4 5 height of plant in cm6 7 8 9 1011 510152025303540 temperature in °C (a) Rajiv gives each plant the same amount of light and water. Why does he do this? [1] (b) Complete the sentence. As the temperature increases the height of the plant . [1] (c) Predict the height of a tomato plant grown at 5 C. cm [1]

12 © UCLES 2017 0846/02/O/N/17 12 Rays of light let us see things. potmirror image of pot (a) An image of the pot can be seen in the mirror. What happens when a light ray from the pot reaches the mirror? Circle the correct answer. absorbed blocked coloured reflected refracted [1]

13 © UCLES 2017 0846/02/O/N/17 [Turn over (b) Why can we see the image of the pot? Circle the correct answer. light bounces off our eyes light enters our eyes light is blocked by our eyes light leaves our eyes light reflects from our eyes [1] (c) The pot does not let light pass through it. Why? Circle the correct answer. the pot is heavy the pot is opaque the pot is tall the pot is transparent the pot is wide [1]

14 © UCLES 2017 0846/02/O/N/17 13 Mia investigates sound. She puts different amounts of water in each glass. Mia moves her finger around the top of each glass. finge r glass water ABCDE Mia carefully measures the amount of water. (a) What is the name given to an amount of water? Circle the correct answer. force length size temperature volume [1] (b) What apparatus does she use to accurately measure the amount of water? ........................................................................................................................ [1]

15 © UCLES 2017 0846/02/O/N/17 [Turn over (c) Mia says ‘I predict that the glass with the most water will have the highest pitch.’ Here are her results. glass A B C D E pitch very low low medium high very high Is Mia’s prediction correct? ............................. Explain your answer. .............................................................................................................................. ......................................................................................................................... [2]

16 © UCLES 2017 0846/02/O/N/17 14 Mike investigates what happens when some white solids are added to cold water. Here is the equipment he uses. test-tube 5 cm of water 3 thermometer Mike measures the temperature of the water before adding the white solid. Mike stirs the solid and water. He then measures the temperature of the water after he adds the solid. Mike tests four white solids. Here is his results table. solid temperature before in °C temperature after in °C other observations A 20 32 blue solution forms B 20 17 fizzes and forms a colourless solution C 20 13 colourless solution forms D 20 20 white solid remains at bottom of test-tube (a) Which solid in the table increases the temperature of the water? [1] (b) Which solid in the table makes a gas when added to water? [1]

17 © UCLES 2017 0846/02/O/N/17 [Turn over (c) Solid B shows an irreversible change when added to water. What is an irreversible change? [1]

18 © UCLES 2017 0846/02/O/N/17 15 Oliver investigates sound. string metal coat hanger Oliver ties string to each end of a metal coat hanger. He wraps the string around his fingers. He puts his fingers in his ears. Oliver leans forward and hits the coat hanger on a chair. metal coat hanger chair

19 © UCLES 2017 0846/02/O/N/17 [Turn over (a) Why does Oliver hear a sound? Circle the best answer. the coat hanger is made of metal the coat hanger vibrates the string is a solid the string is short he is leaning over the chair [1] (b) Describe how Oliver can make the sound he hears louder. [1] (c) The sound travels through the metal coat hanger and string to his ears. Oliver takes his fingers out of his ears. Explain what happens to the sound he hears. The sound will be because . [2]

20 © UCLES 2017 0846/02/O/N/17 16 Ahmed and Hassan are investigating how wind affects seed dispersal. They have some sycamore seeds. (a) Ahmed wants to do the investigation inside the classroom using a fan. Hassan wants to do the investigation outside using the wind. Who has the best idea? Explain why. [1] (b) Hassan makes some predictions about his investigation. Circle the correct prediction using your scientific knowledge. Green seeds will travel further than black seeds. The heavier the seed the further the seed will travel. The slower the wind the further the seed will travel. The stronger the wind the further the seed will travel. The wind speed will not affect how far the seed will travel. [1]

21 © UCLES 2017 0846/02/O/N/17 [Turn over (c) Ahmed says ‘We need to repeat the investigation.’ Why is this a good idea? [1]

22 © UCLES 2017 0846/02/O/N/17 17 Blessy investigates five different substances. This is the information she finds. substance melting point in °C boiling point in °C what happens when Blessy heats the substance for 10 minutes A – 4 104 evaporates to leave a white solid B 52 100 melts and forms a colourless liquid C 0 64 completely evaporates D 567 1650 stays a white solid E 0 100 completely evaporates (a) Which substance has the lowest melting point? [1] (b) Which of the substances is a solution of salt in water? Write a reason for your answer. [2] (c) Room temperature is 25 °C. Substance B is a solid at room temperature. Use the information in the table to explain why. [1]

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