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| Filename: | [PDF] 2011 CAIE P1 P2 Mark Schemes Science Stage 8 Cambridge Lower Secondary Progression Test.pdf |
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| Description: | Download file or read online 2011 CAIE Cambridge lower secondary progression test past exam paper Science stage 8 P110/MS/A/M/11 mark schemes paper 1 and paper 2 - Cambridge Assessment International Education. |
[PDF] 2011 CAIE P1 P2 Mark Schemes Science Stage 8 Cambridge Lower Secondary Progression Test.pdf | Plain Text
1 Science Stage 8 V2
© UCLES 2011 P110/MS/A/M/11 2 This table gives general guidelines on marking answers involving units of length. For questions involving other quantities, correct units are given in the answers. The table shows acceptable and unacceptable versions of the answer 1.85 m. Correct answer Also accept Do not accept Units are not given on answer line and the question does not specify a unit 1.85 m Correct conversions provided the unit is stated, e.g. 1 m 85 cm 185 cm 1850 mm 0.00185 km 1.85 185 m If the unit is given on the answer line, e.g. ………………… m ……1.85…… m Correct conversions, provided the unit is stated unambiguously, e.g. ……185 cm…… m ……185…… m ……1850…… m etc. If the question states the unit that the answer should be given in, e.g. “Give your answer in metres” 1.85 m 1.85 1 m 85 cm 185; 1850 Any conversions to other units.
© UCLES 2011 P110/MS/A/M/11 3 Stage 8 Paper 1 Mark Scheme Question 1 Part Mark Answer Further Information 3 aluminium K argon Ca potassium C calcium Ar beryllium Al 5 correct = 3 marks 3/4 correct = 2 marks 1/2 correct = 1 mark Total 3 Question 2 Part Mark Answer Further Information (a) 1 wave A more than one letter = 0 marks (b) (i) 1 wave D more than one letter = 0 marks (ii) 1 high amplitude Accept any clear indication of correct response, e.g. circle, tick. more than one answer = 0 marks Total 3
© UCLES 2011 P110/MS/A/M/11 4 Question 3 Part Mark Answer Further Information (a) (i) 1 carbohydrates / fibre / minerals / vitamins / water Accept any named example, e.g. starch / vitamin D / calcium. (ii) 1 growth Accept repair / enzymes. (iii) 1 stomach Accept intestine / alimentary canal. any two (idea that peanuts are) high in fat / fat is over 100% of GDA per 100 g Accept (idea that) nearly 30% of energy requirement in 100 g. too much fat causes health problems / (idea that peanuts) cause weight gain Too many kJ cause health problems. (b) (i) 2 just eating peanuts is not giving him a balanced diet / peanuts are lacking in other nutrients Accept possible allergies to peanuts. (ii) 1 liver / meat (including named meat e.g. beef) / shell fish (including named shell fish) / sardines / thyme / curry powder / garam masala / oat or wheat bran / breakfast cereals Accept any food high in iron. Accept any suitable food rich in iron. (iii) 1 anaemia Accept anaemic / tiredness / looking pale / fewer red blood cells. Total 7
© UCLES 2011 P110/MS/A/M/11 5 Question 4 Part Mark Answer Further Information (a) 1 dispersion Accept any clear indication of correct response, e.g. circle, tick. more than one answer = 0 marks (b) 2 colour order orange (2) green 4 red (1) yellow (3) blue 5 violet 7 indigo 6 order 4 and 5 correct = 1 mark order 6 and 7 correct = 1 mark (c) 1 rain / oil Accept rainbow. Total 4 Question 5 Part Mark Answer Further Information (a) (i) 2 5 m/s 1 mark for answer and 1 mark for unit Accept metres per second. (ii) 1 Speed may not have been constant over all the distance. Accept examples of why speed may be different, e.g. dog started from rest. (b) (i) 1 A Accept any clear indication. (ii) 1 D Accept any clear indication. (iii) 1 B Accept any clear indication. Total 6
© UCLES 2011 P110/MS/A/M/11 6 Question 6 Part Mark Answer Further Information (a) (i) 1 (pH) 7 (ii) 1 variable volume of starch added pH of the solution temperature of the solution volume of amylase added all correct = 1 mark any other combination = 0 marks (iii) 1 wear goggles / protective clothing / read warnings on chemical bottles (b) (i) 2 (idea that) it works best at pH 7 does not work at pH 3 or pH 11 works slowly at pH 5 or pH 9 any two Accept that it works best when it is neutral. Accept it does not work or works slowly when it is acidic or alkaline. (ii) 2 more pH values repeat the investigation time how long it takes to turn yellow (idea that) check that it is always the same shade of yellow any two Accept use of named pH values, e.g. pH 6. Accept ‘use a colour chart to compare colours’. Total 7 Question 7 Part Mark Answer Further Information (a) 1 chlorine Accept clorine Do not accept chloride. (b) 1 magnesium (c) 1 iron sulfide Accept iron sulphide. Total 3
© UCLES 2011 P110/MS/A/M/11 7 Question 8 Part Mark Answer Further Information (a) (i) 1 decrease in size / smaller Accept any measurement indicating a smaller size, e.g. not as tall. (ii) 2 move screen move torch move hands nearer / further from screen / torch any two Accept alternative words e.g. nearer / towards. (b) 1 Measurement – height / width / area / cm Apparatus – with a ruler / tape measure both correct = 1 mark Total 4 Question 9 Part Mark Answer Further Information (a) (i) 1 A / water and air (ii) 2 iron + oxygen + water 3 correct in any order = 2 marks 1/2 correct in any order = 1 mark (b) 2 coat with plastic cover in oil paint galvanise / coat with zinc use silica gel / keep in a dry place (idea of) tin plate sacrificial protection / bolt on a lump of magnesium any two Accept any reasonable methods that would prevent water or air reaching the nail. Total 5
© UCLES 2011 P110/MS/A/M/11 8 Question 10 Part Mark Answer Further Information (a) 1 metal it is a conductor / ‘heating’ part of the information (b) 2 Metals are good reducing agents or non-metals are good oxidising agents. Metals are good conductors of electricity or non-metals are poor conductors of electricity. Metals are malleable or non-metals are brittle. Metals are ductile or non-metals are not ductile. Metals are shiny or non-metals are dull. Metals are sonorous or non-metals are not sonorous. Metals have high melting points or non-metals have low melting points. Metals have high boiling points or non-metals have low boiling points. Metals are strong or non-metals are weak. Metals are hard or non-metals are soft. Metals form basic oxides or non- metals form acidic oxides. any two Assume answers refer to metals unless otherwise stated. Total 3
© UCLES 2011 P110/MS/A/M/11 9 Question 11 Part Mark Answer Further Information (a) 1 weight / mass / kilograms head circumference size of feet / hands / ears any one Accept any reasonable measurements taken in your own country. (b) 1 (idea of) to check the baby is growing correctly / (idea of) to allow them to notice if something is wrong (c) 1 Graph sketched on chart starting at 55 cm and then drawn below the original one. Accept any shape graph (but not falling below 55 cm line). Total 3 Question 12 Part Mark Answer Further Information 2 chemical (formulae) element compound water (H 2O) () carbon dioxide (CO 2) hydrogen (H 2) helium (He) magnesium (Mg) 4 correct = 2 marks 2/3 correct = 1 mark 1 correct = 0 marks Total 2
© UCLES 2011 P110/MS/A/M/11 10 Stage 8 Paper 2 Mark Scheme Question 1 Part Mark Answer Further Information (a) (i) 2 correct diagram e.g. Answer needs at least two lines above and 2 lines below. lines from one pole to the other = 1 mark correct direction of arrows from N to S = 1 mark (ii) 1 (plotting) compass (b) 1 Diagram redrawn as in (a) (i) but with field lines further apart or just one field line. Accept any diagram with fewer lines than in (a)(i). Ignore any arrows. (c) 2 Two North poles attract each other. Two South poles attract each other. Permanent magnets are always in the shape of a bar. Magnetic fields cannot be seen. A North pole and South pole attract each other. 2 correct = 2 marks 1 correct = 1 mark If 3 boxes ticked, 2 correct = 1 mark If 3 boxes ticked, 1 correct = 0 marks If 4/5 boxes ticked, 2 correct = 0 marks Total 6
© UCLES 2011 P110/MS/A/M/11 11 Question 2 Part Mark Answer Further Information (a) 1 (idea of a ) pump / to move blood around the body (b) 3 Artery Capillaries Veins in this order (c) (i) 1 fat deposits / eating too much fatty food (ii) 1 blood clots / narrows the arteries / heart disease / atherosclerosis Total 6
© UCLES 2011 P110/MS/A/M/11 12 Question 3 Part Mark Answer Further Information (a) 3 solid: volume – (idea of) fixed can it be compressed? – no liquid: can it flow? – yes gas: shape – (idea of) same as container can it flow? – yes can it be compressed? – yes 6 correct = 3 marks 4/5 correct = 3 marks 2/3 correct = 1 mark 1 correct = 0 marks (b) (i) 2 Solid picture has tightly packed particles in a regular pattern e.g. Gas picture has plenty of space around particles, at least two particles shown but no more than five particles e.g. each correct diagram = 1 mark Accept free-hand circles of roughly the same size. (ii) 1 (idea that) there are (very few) spaces between the particles (c) 1 (idea of ) particles hitting (the sides of) the container Total 7 Question 4 Part Mark Answer Further Information (a) 2 carbon dioxide water 2 correct = 2 marks 1 correct = 1 mark 3 ticked, 2 correct = 1 mark any other combination of ticks = 0 marks Total 2
© UCLES 2011 P110/MS/A/M/11 13 Question 5 Part Mark Answer Further Information (a) (i) 1 green (ii) 2 Green light is reflected. Red and blue light are absorbed. Do not accept green light bounces. (b) (i) 1 red and green yellow red and blue cyan blue and green magenta all lines correct = 1 mark (ii) 1 white (light) Total 5
© UCLES 2011 P110/MS/A/M/11 14 Question 6 Part Mark Answer Further Information (a) 2 statement order Ovulation occurs. 2 The levels of the female sex hormones drop quickly. 4 Inner lining of uterus starts to be lost as menstrual blood. 5 The egg cell (ovum) travels from the ovary to the uterus. 3 A new egg cell (ovum) starts to develop in the ovary. (1) Inner lining of uterus starts to be lost as menstrual blood (5) = 1 mark. Other 3 statements are in correct sequence, e.g. ovulation occurs before egg cell travels before the levels of hormones drop, etc = 1 mark. (b) 1 It stops. Accept no menstrual blood loss. (c) (i) 1 oviduct Accept any clear indication. (ii) 1 in the uterus Accept womb. Total 5
© UCLES 2011 P110/MS/A/M/11 15 Question 7 Part Mark Answer Further Information (a) (i) 1 increase Accept any indication of more paper clips attracted. (ii) 1 electromagnet is stronger (with more turns of wire) Accept idea of magnetism increasing. (b) (i) 1 no pattern / none Accept a description, e.g. goes down, up, down. (ii) 1 using paperclips of different sizes / masses / weights Accept idea of changing more than one variable. (iii) 1 use same size paper clips repeat each reading / take means take more readings, e.g. 10, 14 turns any two Accept other suitable improvements, e.g. test paper clips in size order. Total 5
© UCLES 2011 P110/MS/A/M/11 16 Question 8 Part Mark Answer Further Information (a) 1 to make a fair comparison / make the test fair Accept it may take longer with larger volume. (b) (i) 1 0 50 40 30 20 60 10 25 20 15 10 5 temperature of water / °C time / minutes all points plotted correctly = 1 mark Accept a tolerance of +/- ½ small square of graph paper. (ii) 1 20 (°C) (iii) 1 straight line of best fit drawn on graph e.g. 0 50 40 30 20 60 10 25 20 15 10 5 temperature of water / °C time / minutes Accept any reasonable attempt of a line of best fit. (c) 1 (idea that) the higher the temperature of the water, the quicker the ink diffuses Accept the lower the temperature of the water, the slower the ink diffuses. (d) 1 repeat the 20°C result repeat and work out the mean take results at more temperatures record the time more accurately / use e.g. 10 second intervals have a comparison (diffused) to know when diffusion is complete any one Accept any reasonable improvement. Total 6
© UCLES 2011 P110/MS/A/M/11 17 Question 9 Part Mark Answer Further Information (a) (i) 1 nitrogen (ii) 1 carbon dioxide Accept any clear indication of carbon dioxide. (ii) 1 made of two or more (different) elements joined together or made of carbon and oxygen joined together Do not accept mixture for idea of joined together. (b) 1 copper + oxygen copper oxide more than one ticked = 0 marks Total 4 Question 10 Part Mark Answer Further Information (a) (i) 1 turns yellow or brown or black / changes colour (ii) 1 collects tar (from the cigarette) (b) 1 lungs Accept named part of the lung e.g. alveoli / bronchiole / bronchus. (c) 1 cancer / named cancer e.g. lung cancer emphysema bronchitis / smoker’s cough increases heart rate high blood pressure heart attack heart disease blocking of blood vessels loss of circulation to limbs / legs lack of oxygen in the blood problems during pregnancy / low birth weight babies any one Total 4