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Science Stage 7 V2© UCLES 2011 P110/01/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 P110/01/A/M/11 3 Stage 7 Paper 1 Mark Scheme Question 1 Part Mark Answer Further Information (a) 2 crust outer core inner coremantle all 4 labels correct = 2 marks 2/3 labels correct = 1 mark 1 label correct = 0 marks (b) 2 The inner core is the hottest part of the Earth. Iron and nickel are only found in the crust. Solid rocks are found in all the layers. The mantle is made up of semi- molten rock called magma. each correct answer = 1 mark 3 boxes are ticked, 2 correct = 1 mark 4 boxes are ticked, 2 correct = 0 marks Total 4 Question 2 Part Mark Answer Further Information 1 The torch battery is an energy source. It stores chemical energy. each correct sentence = 1 mark 1 This is electrical energy. 1 Energy is transferred by the bulb to the surroundings as thermal (heat) energy and light energy Accept reverse order, i.e. light energy and thermal (heat) energy. Total 3
© UCLES 2011 P110/01/A/M/11 4 Question 3 Part Mark Answer Further Information (a) 1 no colonies found (without oxygen) / number of colonies is always 0 / colonies only found where there is oxygen Accept the correct idea, e.g. nothing grows. (b) 1 measure the (surface) area of colonies / diameter / use a ruler / use a scale Accept microscope scale. (c) (i) 2 0 10 20 30 40 50 60 10 20 30 40 50 60 without oxygen number of colonies temperature / °C all points plotted correctly = 1 mark line joining points = 1 mark (Line joining points can be dot-to-dot or best fit.) (ii) 1 without oxygen = 0 with oxygen = anywhere in the range of 20 to 0 both answers correct = 1 mark Total 5
© UCLES 2011 P110/01/A/M/11 5 Question 4 Part Mark Answer Further Information (a) 3 organ system main function digestive transport nutrients circulatory break down nutrients nervous remove waste excretory gas exchange respiratory co-ordination 5 correct = 3 marks 3/4 correct = 2 marks 1/2 correct = 1 mark more than one line from one organ system = 0 marks for this one organ system (b) (i) 1 both answers correct = 1 mark (ii) 2 (idea of) antagonistic (muscles) one muscle / bicep contracts and the other muscle / tricep relaxes the idea of antagonistic = 1 mark Accept the correct idea, e.g. they work against each other / and they work in the opposite way. how they work = 1 mark Accept the correct idea, e.g. one tightens and the other lengthens. Total 6 tricep(s) bicep(s)
© UCLES 2011 P110/01/A/M/11 6 Question 5 Part Mark Answer Further Information 4.5 (cm) each correct answer = 1 mark Accept 4.4 – 4.6(cm) (Printed versions may vary. Accept +/- 0.1 cm.). (a) 2 22.5 (units) Accept the diameter given x 5. (b) 1 Mercury Saturn Venus all three in any order = 1 mark Total 3
© UCLES 2011 P110/01/A/M/11 7 Question 6 Part Mark Answer Further Information (a) (i) 2 heating the same point / position on the rod same distance from flame / heat source same flame / heat source same thickness of wax same type of wax same cross section of metal rod same mass of rod same length of rod any two each correct answer = 1 mark Accept same temperature. (ii) 1 Measurement – length of bare metal / length of unmelted wax Apparatus – ruler or Measurement – mass / amount / weight of wax melted Apparatus – balance/scales (iii) 2 example of type of table table with headings with suitable measurements = 1 mark headings given, including at least one correct unit = 1 mark Accept measurements given in 6(a)(ii) even if incorrect e.g. density. (b) (i) 1 (metal) B (ii) 1 ductile / does not corrode / un- reactive / flexibility Accept idea of easy to bend Total 7 rod distance wax melted in mm
© UCLES 2011 P110/01/A/M/11 8 Question 7 Part Mark Answer Further Information (a) 2 beak: large / long / sharp / pointed eyes: good vision / good eyesight / either side of head wings: to fly / strong / big legs: long any two each correct answer = 1 mark Do not accept just: / ‘has a beak / has eyes / has wings / has legs. (b) 1 predator Accept carnivore. Total 3 Question 8 Part Mark Answer Further Information (a) 2 The force of friction between the tyre(s) and the road / tarmac / surface / brake makes the cars stop. This is because the force of friction has increased. each correct sentence = 1 mark Accept reverse order, e.g. road and tyres. Accept brake and the wheel Accept any indication of increased, e.g. gone up, become more. (b) 2 Water on the road surface increases friction. Oil on the road surface decreases friction. Ice on the road surface does not change friction. Rougher road surface increases friction. Smoother road surface does not change friction. each correct answer = 1 mark 3 boxes ticked, 2 correct = 1 mark 4 or more boxes ticked = 0 marks Total 4
© UCLES 2011 P110/01/A/M/11 9 Question 9 Part Mark Answer Further Information 2 further apart than the particles in a liquid. further apart than the particles in a gas. able to vibrate about a fixed point. arranged in a more fixed pattern than particles in a liquid. not able to vibrate when they reach 0°C. able to vibrate more as they gain energy. 3 correct = 2 marks 2 correct = 1 mark 1 correct = 0 marks If 4 boxes ticked, 3 correct = 1 mark If 4 boxes ticked, 2 correct = 0 marks If 5/6 boxes ticked = 0 marks Total 2 Question 10 Part Mark Answer Further Information 3 appearance function (idea of) many branches to carry electrical impulses tiny cell with a nucleus and a long tail (idea of) swim to egg cell / carry genetic information / fertilise egg / reproduction cell contains lots of chloroplasts (idea of) to carry out photosynthesis each correct answer = 1 mark Total 3
© UCLES 2011 P110/01/A/M/11 10 Question 11 Part Mark Answer Further Information (a) 1 igneous rock Accept any clear indication. (b) 1 non-metal does not conduct electricity non-metal and piece of information = 1 mark Accept any clear indication of correct response in the box. (c) (i) 1 fossil Accept impression. (ii) 1 sedimentary rock Accept any clear indication. Total 4 Question 12 Part Mark Answer Further Information (a) 2 renewable hydroelectric solar tidal wind wave non-renewable gas oil 4/5 correct renewables in any order = 1 mark all 2 correct non-renewables in any order = 1 mark (b) 1 (idea of) a source that cannot be replenished / grown / generated / sustained Accept idea that it takes millions of years to form. Total 3 Question 13 Part Mark Answer Further Information (a) 1 air resistance Accept friction / drag. (b) 1 (idea that for same push on pedal) greater forward force Accept it moves faster. (c) 1 improves / better Accept idea of less fuel used. Total 3
© UCLES 2011 P110/01/A/M/11 11 Stage 7 Paper 2 Mark Scheme Question 1 Part Mark Answer Further Information (a) 2 each correct name and function = 1 mark (b) 1 root(s) stem(s) leaf/leaves all correct and in correct order = 1 mark Total 3 Question 2 Part Mark Answer Further Information (a) 1 Fuel is stored in bags. gas Fuel flows along a pipe to where it is needed. liquid Fuel is stored under pressure in cylinders. solid all correct = 1 mark Accept fuel flows along pipe to where it is needed connected to gas. (b) (i) 2 freezing evaporation each label in correct position = 1 mark (ii) 1 (melting) Accept arrow pointing to liquid on line already drawn between solid and liquid. Total 4 name leaf function photosynthesis / to make food name flower function reproduction solid gas liquid solid liquid
© UCLES 2011 P110/01/A/M/11 12 Question 3 Part Mark Answer Further Information (a) (i) 1 mango (ii) 1 lemon (b) 1 dark blue (c) 1 neutralisation Accept neutralise. Total 4 Question 4 Part Mark Answer Further Information (a) 1 1 hour 1 day 1 week 1 month 1 year Accept clear indication of correct response, e.g. 365 days / circled / ticked / starred. more than one circled / underlined = 0 marks (b) 1 1 hour 1 day 1 week 1 month 1 year Accept clear indication of correct response, e.g. 24 hours / circled / ticked / starred. more than one circled / underlined = 0 marks (c) 1 (idea of) relative movement / (idea that) Earth is moving (but we do not feel it is) Accept Earth spins. Total 3
© UCLES 2011 P110/01/A/M/11 13 Question 5 Part Mark Answer Further Information (a) (i) 1 grass grasshopper (toad) hawk Accept correct connections made with arrows between the pictures. (ii) 1 grass (iii) 1 (hawks) have no food / starve / die Accept hawks eat something else e.g. grasshoppers / move away (to find food). Accept correct explanations from incorrect answer given in 5(a)(i). (b) 2 animal vertebrate bird Accept any clear indication of correct response, e.g. circle / tick etc. 3 correct = 2 marks 1/2 correct = 1 mark 4 underlined, 2/3 correct = 1 mark Any other combination = 0 marks Total 5 Question 6 Part Mark Answer Further Information (a) (i) 1 silty Accept pH 7 (ii) 1 peaty Accept pH 4.5 (iii) 1 water passes straight through it / is free draining (b) (i) 2 sandy (because) pH is 8 and idea that there are no stones in sandy soil each answer in correct order = 1 mark (ii) 1 nutrients / permeability / drainage / texture Accept other suitable soil properties, e.g. appearance under a microscope. Total 6
© UCLES 2011 P110/01/A/M/11 14 Question 7 Part Mark Answer Further Information (a) 1 vacuole (b) (i) 1 leaf (cell) Accept green cell / stem cell / palisade cell / spongy mesophyll cell. (ii) 1 root (cell) Accept bulb and other underground plant structures. (c) 1 chloroplast and cell wall both in either order = 1 mark Accept (large) vacuole for one of the answers. Total 4 Question 8 Part Mark Answer Further Information 1 planet order Earth 2 Mercury (1) Mars 3 Saturn 4 Neptune 5 all correct = 1 mark Total 1
© UCLES 2011 P110/01/A/M/11 15 Question 9 Part Mark Answer Further Information 2 The hot air balloon has the most kinetic energy when moving the fastest. The hot air balloon has the most kinetic energy after it has landed on the ground. The chemical energy in the propane fuel is changed into heat energy. The hot air balloon has no light or sound energy when it is travelling through the air The hot air balloon has the most potential energy when it is the highest in the sky. 3 correct = 2 marks 1/2 correct = 1 mark 4 ticks, 2/3 correct = 1 mark Total 2
© UCLES 2011 P110/01/A/M/11 16 Question 10 Part Mark Answer Further Information (a) (i) 2 A = air resistance B = gravity / g Accept upthrust / friction. Accept weight. (ii) 1 downwards / towards Earth / accelerating (iii) 1 downwards / towards Earth / constant speed (b) (i) 1 (Idea) 1 and (idea) 4 both in either order = 1 mark (ii) 1 (Idea) 5 (iii) 1 any sensible prediction, e.g. the bigger the area the longer time it takes to fall Predictions do not have to be correct to gain the mark, just looking for the idea of what a prediction is. (iv) 1 not safe to test on people / to compare different conditions / to compare results to real situations Accept other plausible reasons, e.g. takes too long / costs too much / difficult to measure. (c) 3 possible measurements – linked equipment: time – stop watch / clock height of drop / distance of fall – ruler mass of parachute – balance / scales size of parachute / area of parachute – ruler two correct measurements linked to the correct equipment = 3 marks a measurement and the correct link to a piece of equipment = 2 marks a correct measurement = 1 mark Total 11
© UCLES 2011 P110/01/A/M/11 17 Question 11 Part Mark Answer Further Information (a) 1 (difference in) height / circumference / size of canopy (b) (i) 1 number of rings Accept: count the rings. (ii) 1 (idea of) outer ring size (c) 2 (mention of) temperature over the year (mention of) rainfall (mention of) amount of sunlight during growing season any two each correct answer = 1 mark Total 5 Question 12 Part Mark Answer Further Information 2 material property use diamond sparklyas a lubricant graphitethermal insulator and waterproofto make container for hot drink aluminiummade of layers that slideto make jewellery plasticlightweight and does not corrodeto make aircraft bodies all correct = 2 marks all three correct links between material and property = 1 mark all three correct links between property and use = 1 mark Total 2