Download [PDF] October 2015 CAIE P2 Mark Schemes 0846 Science Cambridge Primary Checkpoint

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[PDF] October 2015 CAIE P2 Mark Schemes 0846 Science Cambridge Primary Checkpoint.pdf | Plain Text

This document consists of 10 printed pages. IB15 10_0846_02/*RP © UCLES 2015 [Turn over Cambridge International Examinations Cambridge Primary Checkpoint SCIENCE 0846/02 Paper 2 October 2015 FINAL 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.

2 UCLES 2015 0846/02/O/N/15 Question number 1 CPS00314 Part Mark Answer Further Information 3 A food chain starts with a producer . Any animal eaten by another animal is their prey . An animal that eats something else in the food chain is a consumer . An animal that eats another animal is a predator . 4 correct = 3 marks 2 or 3 correct = 2 marks 1 correct = 1 mark Accept consumer Total 3 Question number 2 CPS00314 Part Mark Answer Further Information (a) 1 300(°C) (b) 1 D (c) 1 changes (from a liquid) to a gas / evaporates Accept changes to vapour Do not accept changes to steam / water vapour (d) 1 100(°C) Total 4

3 UCLES 2015 0846/02/O/N/15 Question number 3 CPS00405 Part Mark Answer Further Information (a) 1 more than one answer circled = 0 marks Accept any indication of the correct answer (b) 1 pluck / pick / move / vibrate (the string(s)) Accept strum / pull Ignore play / tighten / loosen / hit / strike / use / bang (the guitar / string(s)) (C) 1 Play the violins harder.  Play the violins softer. Have more violins playing.  Have less violins playing. both needed for 1 mark more than two ticks = 0 marks Total 3 Question number 4 CPS00510 Part Mark Answer Further Information 3 A = Pinnate-leaved Ragwort B = Alpine Aster C = Cowberry D = Fairy Thimble Bellflower E = Common Mezereon Accept partial names, e.g. Bellflower 5 correct = 3 marks 3 or 4 correct = 2 marks 1 or 2 correct = 1 mark Total 3 force meter balance sound meter ruler 15 105 0g cm g

4 UCLES 2015 0846/02/O/N/15 Question number 5 CPS00256 Part Mark Answer Further Information (a) 1 evaporation filtration magnetic attraction sieving Accept any indication of the correct answer more than 1 answer circled = 0 marks (b) 1 evaporation filtration magnetic attraction sieving Accept any indication of the correct answer more than 1 answer circled = 0 marks (c) 1 evaporation filtration magnetic attraction sieving Accept any indication of the correct answer more than 1 answer circled = 0 marks Total 3

5 UCLES 2015 0846/02/O/N/15 Question number 6 CPS00238 Part Mark Answer Further Information (a) 1 more than one answer circled = 0 marks Accept any indication of the correct answer (b) 1 beats per minute beats per second minutes per beat seconds per beat more than one answer circled = 0 marks Accept any indication of the correct answer (c) 1 Pierre thinks his pulse rate will increase . Accept any indication of the correct answer but response on answer line takes precedence (d) 1 conclusion method prediction result more than one answer circled = 0 marks Accept any indication of the correct answer (e) 1 to make it more reliable Accept (idea of) checking results / to see if they are the same Ignore to get the average / to get the mean / to get precise results Do not accept to make the results more accurate / to make it a fair test Total 5 32 583 6 9 12152 4 6 8 10 12 14 16 18 20 2224262830 34 36 38 40 42 4644 48 50 5254561/10 cm3 °C cm

6 UCLES 2015 0846/02/O/N/15 Question number 7 CPS00265_A Part Mark Answer Further Information (a) 1 evaporation Accept evaporate Ignore heating Do not accept boiling (b) 1 condensation Accept condense / condensing (c) 1 freezing Accept freeze Ignore solidifying (d) 1 (idea that) volume of water decreases / all the water disappears / white solid / white crystals / steam / water vapour / gas produced Accept bubbles / salt Ignore boiling Total 4 Question number 8 CPS00325 Part Mark Answer Further Information 1 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.  more than one answer ticked = 0 marks Accept any indication of the correct answer Total 1

7 UCLES 2015 0846/02/O/N/15 Question number 9 CPS00311 Part Mark Answer Further Information (a) 1 attract insects / attract bees Accept use insects for pollination (b) 1 anther carpel ovary more than one answer circled = 0 marks Accept any indication of the correct answer (c) 1 nectary petal sepal stigma more than one answer circled = 0 marks Accept any indication of the correct answer Total 3 Question number 10 CPS00320 Part Mark Answer Further Information (a) 3 4 correct = 3 marks 2 or 3 correct = 2 marks 1 correct = 1 mark Accept connector for wire Ignore circuit for wire Accept (negative or positive) terminal of cell or battery for cell or battery (b) 1 (idea of) circuit is broken / not complete / not joined up Accept there is a gap / there is a hole Do not accept the switch is on / off (c) 1 cell or battery the wrong way round / negative connected to negative / positive connected to positive / positive not connected to negative Accept terminals wrong way round Accept cell or battery is on wrong side or in wrong place Do not accept the switch is on / off Total 5 cell or battery lamp or bulb switch (open)or wire lead

8 UCLES 2015 0846/02/O/N/15 Question number 11 CPS00504 Part Mark Answer Further Information (a) 1 ruler Accept measuring tape / tape measure / tape ruler Ignore scale on its own or measuring scale (b) 1 A C D E more than one answer circled = 0 marks Accept any indication of the correct answer (c) 1 C is the shortest / shorter answer must be comparative e.g. C is short compared to A B and D Do not accept C is short Total 3 Question number 12 CPS00092 Part Mark Answer Further Information 3 Any three from: wide feet / padded feet hump eyelids / long eye lashes / eye brows covered nostrils / nostrils that close lips that close / thick lips short hair / thick hair / hair for camouflage long legs just ‘feet’ is insufficient Accept bump (on back) just ‘nostrils’ is insufficient just ‘lips’ is insufficient just ‘hair’ is insufficient Ignore large legs Accept as an extra marking point: can go a long time without drinking Total 3

9 UCLES 2015 0846/02/O/N/15 Question number 13 CPS00410 Part Mark Answer Further Information 1 Edwin Hubble Galileo Galilei  Isaac Newton Leonardo da Vinci more than one answer ticked = 0 marks Accept any indication of the correct answer Total 1 Question number 14 CPS00246 Part Mark Answer Further Information (a) 1 measuring cylinder Accept cylinder Do not accept measuring tube / beaker (b) 1 35 (cm 3) unit not needed (c) 1 balance beaker ruler thermometer more than one answer circled = 0 marks Accept any indication of the correct answer (d) 1 decreases increases stays the same more than one answer circled = 0 marks Accept any indication of the correct answer Total 4

10 UCLES 2015 0846/02/O/N/15 Question number 15 CPS00453 Part Mark Answer Further Information (a) 2 light (from the Sun) is blocked (by the pointer) (idea that) the shadow (edge) is on the 14:00 (time scale) each correct answer = 1 mark Accept light is stopped / pointer is opaque Accept shadow falls on the 14:00 (b) 1 the Sun moves during the day the Earth spins on its axis during the day the Sun spins on its axis during the day more than one answer circled = 0 marks Accept any indication of the correct answer (c) 1 no Sun at night / no light at night / it is only light in the day / the Sun is only seen in the dayAccept (idea that) Sun is not always visible / Sun is not there at night Total 4 Question number 16 CPS00124 Part Mark Answer Further Information 1 (idea of) easier to see trends / (idea of) easier to spot anomalous results Accept (idea of) the results cannot get muddled up / results are organised / results cannot get lost / results are easy to understand / so she does not get confused Ignore to record her results properly Ignore to not forget her results Do not accept to make it reliable / fair test Total 1