[PDF] Cambridge Primary Checkpoint - Science (0846) October 2015 Paper 2.pdf | Plain Text

This document consists of 18 printed pages and 2 blank pages. IB15 10_0846_02/3RP © UCLES 2015 [Turn over *8528091185* Cambridge International Examinations Cambridge Primary Checkpoint SCIENCE 0846/02 Paper 2 October 2015 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 questio\ n or part question. You should show all your working in the booklet. The total number of marks for this paper is 50.

2 © UCLES 2015 0846/02/O/N/15 1 Complete the sentences about food chains. Choose from the following words. consumer predator prey producer A food chain starts with a . Any animal eaten by another animal is their . An animal that eats something else in the food chain is a . An animal that eats another animal is a . [3] 2 This bar chart shows the boiling points of some substances. boiling point in °C 0 ABC substance D 50 100 150 200 250 300 (a) What is the boiling point of substance A? °C [1] (b) Which substance has the lowest boiling point? [1]

3 © UCLES 2015 0846/02/O/N/15 [Turn over (c) What happens to a liquid when it boils? [1] (d) Water is not shown on the bar chart. What is the boiling point for water? °C [1] 3 Oliver measures how loud some sounds are. (a) Circle the apparatus he uses. force meter balance sound meter ruler 15 10 5 0 N cm g [1] (b) Oliver picks up a guitar. guitar What must he do to the guitar to produce a sound? [1]

4 © UCLES 2015 0846/02/O/N/15 (c) There is a group of children playing violins. violin The teacher wants them to produce a louder sound. What two things would make this happen? Tick (
) the two correct sentences. Play the violins harder. Play the violins softer. Have more violins playing. Have less violins playing. [1]

5 © UCLES 2015 0846/02/O/N/15 [Turn over 4 Keys can be used to identify plants. Here is the key for some plants. B ADE C Does it have berries? yes no yes no yes no yes no (It is a Cowberry) (It is an Alpine Aster) (It is a Common Mezereon) (It is a Pinnate-leaved Ragwort) (It is a Fairy Thimble Bellflower) Does it have spiky petals? Does it have bell-shaped flowers?Does it have four petals on each flower? Use the key to identify the plants. A = B = C = D = E = [3]

6 © UCLES 2015 0846/02/O/N/15 5 Chen wants to separate a mixture of salt, sand and iron powders. (a) First of all Chen decides to separate the iron from the mixture. Put a circle around the method he uses. evaporation filtration magnetic attraction sieving [1] (b) Chen then decides to separate the sand from the salt and sand. He adds water to the mixture and then stirs the mixture for two minutes.\ Put a circle around the method he then uses to obtain the sand. evaporation filtration magnetic attraction sieving [1] (c) To finish the separation Chen gets salt from the salt solution. Put a circle around the method he uses to obtain the salt. evaporation filtration magnetic attraction sieving [1]

7 © UCLES 2015 0846/02/O/N/15 [Turn over 6 Pierre and Yuri investigate how exercise changes pulse rate. (a) What equipment will they need to measure pulse rate? Circle the correct equipment. 32 583 6 9 12 152 4 6 8 10 12 14 16 18 20 22 24 26 28 30 34 36 38 40 42 46 44 48 50 52 54 56 1/10 cm3 °C cm [1] (b) Which unit is a correct measurement of pulse rate? Circle the correct answer. beats per minute beats per second minutes per beat seconds per beat [1]

8 © UCLES 2015 0846/02/O/N/15 (c) Pierre runs for 1 minute. Complete the sentence using one of these words. decrease increase stay the same Pierre thinks his pulse rate will . [1] (d) What is the sentence above? Circle the correct answer. conclusion method prediction result [1] (e) Pierre runs for 1 minute again. Why is it a good idea to repeat measurements? [1]

9 © UCLES 2015 0846/02/O/N/15 [Turn over 7 The flow chart shows part of the water cycle. water vapour sea water rivers lakes rain process A process B water droplets in clouds (a) What is the name of process A? [1] (b) What is the name of process B? [1] (c) Sometimes it is so cold that the water in a lake becomes ice. What is the name of this process? [1] (d) Sea water is boiled in a beaker for a long time. What would you see? [1]

10 © UCLES 2015 0846/02/O/N/15 8 Lily wants to measure her mass. She stands on the scales. she puts her hands down she puts her hands up Tick (
) the correct answer. Lily’s mass is greatest when her hands are up. Lily’s mass is less when her hands are up. Lily’s mass is the same when her hands are up or down. [1]

11 © UCLES 2015 0846/02/O/N/15 [Turn over 9 Flowers have different parts. stigma carpel anther sepal nectary petal ovary (a) Why do flowers have petals? [1] (b) Circle the part of the flower which produces pollen. anther carpel ovary [1] (c) Circle a female part of the flower. nectary petal sepal stigma [1]

12 © UCLES 2015 0846/02/O/N/15 10 Rajiv finds an electric circuit diagram in a book. (a) Label the circuit diagram. [3] Rajiv builds this circuit. (b) It does not work. Explain why. [1] (c) Rajiv now builds this circuit. It does not work. Explain why. [1]

13 © UCLES 2015 0846/02/O/N/15 [Turn over 11 Oliver and Carlos investigate sound. They listen to the pitch made by different recorders. AB C DE (a) The recorders are different lengths. What apparatus is used to measure the length of the recorders? [1] (b) Recorder B has the lowest pitch. Predict which recorder will have the highest pitch. Circle the correct letter. A C D E [1] (c) Explain why you predicted this recorder. [1]

14 © UCLES 2015 0846/02/O/N/15 12 Using the picture below list three features which help this animal to adapt to its environment. 1 2 3 [3] 13 Scientists explore the solar system. Which scientist was one of the first to believe that the Sun was at the centre of our solar system? Tick (
) the correct scientist. Edwin Hubble Galileo Galilei Isaac Newton Leonardo da Vinci [1]

15 © UCLES 2015 0846/02/O/N/15 [Turn over 14 Hassan lives by the sea. He wants to find out how much salt is in seawater. He measures a small volume of seawater using this apparatus. 50 X sea water 40 30 20 10 (a) What is the name of apparatus X? [1] (b) What is the volume of seawater in apparatus X? cm 3 [1] (c) Hassan then finds the mass of a clean glass dish. What piece of apparatus should Hassan use to do this? Circle the correct answer. balance beaker ruler thermometer [1]

16 © UCLES 2015 0846/02/O/N/15 (d) Hassan pours all of the seawater into the glass dish. He leaves the dish of seawater in the sun for one day. What happens to the volume of seawater in the dish? Circle the correct answer. decreases increases stays the same [1]

17 © UCLES 2015 0846/02/O/N/15 [Turn over 15 Priya and Mia make a sundial. pointer shadow time scale 13:00 11 : 0 0 10:00 9:00 8:00 7:00 6:00 15:00 14:00 16:00 17:00 18:00 (a) The time is 14:00. Describe how the sundial shows this time. [2] (b) Why does the shadow change during the day? Circle the correct answer. the Sun moves during the day the Earth spins on its axis during the day the Sun spins on its axis during the day [1] (c) Priya wants to make a sundial to show the time over 24 hours. Mia says this is not possible. Explain why Mia is correct. [1]

18 © UCLES 2015 0846/02/O/N/15 16 Aiko investigates how much of a solid dissolves in 100 cm 3 of water. She writes down her results. Here is a page from her note book. 60 °C 120g 30 °C 45g 40 °C 65g 50 °C 90g 20 °C 30g Why is it a good idea for Aiko to put her results in a table? [1]

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