Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Y9 Revision Booklet 1 Mark Scheme Microbes and Disease & Ecological Relationships 8C & 8D 26 min 27 marks Q1-L4, Q2-L4, Q3-L5, Q4-L5, Q5-L6, Q6-L6 1. (a) (b) any one from bacteria viruses fungi 1 do not accept 'germs' or 'microbes' (i) to stop micro-organisms passing from Michael to the first-aider 1 accept 'bacteria' or 'viruses' or 'fungi' or 'microbes' or 'germs' for micro-organisms accept 'to stop blood getting on the firstaider' (ii) to stop micro-organisms passing from the first-aider's hands to the cut or to Michael accept 'bacteria' or 'viruses' or 'fungi' or 'microbes' or 'germs' for micro- organisms accept 'rubber gloves are sterile or cleaner than hands' accept 'to prevent the spread of infection or HIV or AIDS' as an alternative to one of the answers only 1 [3] 2. (a) There is not enough light at X. if more than one box is ticked, 1 award no mark (b) flower (c) (i) accept ‘ovary’ or ‘ovule’ the food chain must begin with the producer any one from waterweed tadpole water beetle waterweed tadpole minnow waterweed minnow perch GSHS 1 1 1 Y9 Revision Booklet 1 (ii) Mark Scheme award one mark for the predator (upper answer) and one mark for its prey (lower answer) either pike water beetle or tadpole or minnow or perch 2 or water beetle tadpole or perch water beetle or minnow or minnow tadpole the mark for the prey may only be awarded if it is directly linked to the predator in the diagram (d) breathing or gas exchange accept ‘take in oxygen’ 1 movement or swimming accept ‘balance’ or ‘steering’ 1 [7] 3. (a) 37°C 1 if more than one box is ticked, award no mark (b) the lotion killed the bacteria accept ‘they died’ or ‘they were killed or destroyed’ 1 (c) the paper disc soaked in water accept ‘the other disc’ 1 (d) any two from keep the lid on the dish seal or secure the dish wear gloves wear a mask or goggles use tweezers to add the paper disc 2 do not accept ‘do the experiment in a fume cupboard’ [5] 4. GSHS (a) (i) microscopic plants tadpoles water boatmen perch or microscopic plants water fleas small fish perch accept ‘plants’ or ‘microscopic’ for microscopic plants (ii) microscopic plants accept ‘plants’ 1 1 2 Y9 Revision Booklet 1 (b) decrease Mark Scheme accept ‘go down’ any one from more of them are eaten by perch perch would have no small fish to eat accept ‘because the increased number of water fleas eat more plants, there is less food for tadpoles, therefore fewer tadpoles’ 1 1 [4] 5. (a) any one from there were not enough bacteria in the food or body accept ‘the bacteria had to grow first’ the bacteria multiplied by the next day 1 (b) the antibiotic or medicine killed all the bacteria accept ‘the antibiotics got rid of all the bacteria’ or ‘there were no bacteria left’ 1 (c) any one from antibiotic or medicine had not killed all the bacteria accept ‘not all the bacteria had gone’ there were still bacteria left alive the bacteria multiplied accept ‘the population rose again’ accept ‘they could grow again’ accept ‘they reproduced again’ 1 any one from it slows down reproduction 1 (d) 1 accept ‘it stops them reproducing’ or ‘it stops them breeding’ or ‘it stops them multiplying’ it is too cold for the bacteria to divide or reproduce accept ‘it stops them growing’ accept ‘slows down growth’ do not accept ‘they are dormant’ do not accept ‘it freezes them’ [5] 6. GSHS (a) (i) 1950 and 1955 both dates are required for the mark accept the dates in reverse order accept ‘1945 and 1955’ do not accept ‘1945 and 1950’ 1 (ii) tar accept a named recognised carcinogen 1 accept ‘carbon particles’ do not accept ‘nicotine’ or ‘carbon monoxide’ if both tar and nicotine are given award no mark 3 Y9 Revision Booklet 1 (b) any one from immunisation vaccination BCG BCG injection BCG jab BCG shot Mark Scheme 1 accept ‘inoculation’ do not accept ‘injection’ accept ‘TB jab’ do not accept ‘jab’ do not accept ‘shot’ do not accept ‘medicine [3] GSHS 4 Y9 Revision Booklet 1 Mark Scheme Atoms and elements/compounds and mixtures 8E & 8F 26 min 26 marks Q1-L3, Q2-L4, Q3-L4, Q5-L6, Q6-L7 1. (a) 4 It is lighter than air. copper for the base of a saucepan It is a good conductor of heat. gold for a ring It is a good conductor of electricity. helium in a balloon It stays shiny because it does not react with oxygen. mercury in a thermometer It is a liquid at room temperature. if more than one line is drawn from any element, award no mark for that element minimum mark zero GSHS 5 Y9 Revision Booklet 1 (b) Mark Scheme helium 1 if more than one box is ticked, award no mark [5] 2. (a) N at top and S at bottom both poles are required for the mark (b) 1 1 S N S all three poles are required for the mark S N 1 N S S (c) all five poles are required for the mark (d) accept ‘iron’ accept ‘nickel’ accept ‘cobalt’ steel 1 [4] 3. (a) (b) very high melting point answers may be in either order 1 good conductor of heat do not accept ‘good conductor’ 1 (i) good conductor of electricity do not accept ‘good conductor’ 1 (ii) can be compressed 1 [4] 4. (a) (i) a mixture 1 if more than one box is ticked, award no mark (ii) a compound 1 if more than one box is ticked, award no mark (iii) any one from they are denser than the liquid 1 accept ‘it is heavier than the liquid or the paint’ accept ‘the solid particles are more dense or heavier or too heavy’ accept ‘the solid is denser’ do not accept ‘solid particles are heavy’ without a comparison or qualifier eg ‘too heavy’ the liquid is less dense than accept ‘the liquid is less dense’ or ‘the liquid is the solid lighter’ GSHS 6 Y9 Revision Booklet 1 (b) Mark Scheme any one from it is insoluble in water water is not a solvent for the paint it dissolves in white spirit white spirit is a solvent for the paint 1 ‘it is waterproof’ is insufficient [4] 5. (a) copper oxygen carbon (b) any one from copper sulphide copper oxide sulphur dioxide carbon dioxide (c) sulphur dioxide 1 answers may be in any order all three elements are required for the mark accept correct symbols for the elements accept ‘sulphur' as one of the three elements 1 do not accept ‘carbon dioxide' 1 [3] 6. (a) (b) (i) A 1 (ii) E 1 (iii) C 1 any one from a compound contains two or more accept ‘a compound contains different elements chemically combined elements or atoms of different types or bonded joined together’ do not accept ‘a compound contains two or more atoms joined together’ a mixture contains two or more elements or compounds or substances not chemically combined or bonded 1 accept ‘a mixture can be separated by physical means’ ‘a mixture can be separated’ is insufficient (c) (i) any one from name: oxygen formula: O2 name: hydrogen formula: H2 name: nitrogen formula: N2 name: chlorine formula: Cl2 1 accept any other element which exists as diatomic molecules in the gaseous state both the name and formula are required for the mark do not accept ‘O’ or ‘H’ or ‘N’ or ‘Cl’ GSHS 7 Y9 Revision Booklet 1 (ii) Mark Scheme any one from name: carbon dioxide formula: CO2 name: water formula: H2O name: sulphur dioxide formula: SO2 name: nitrogen dioxide or nitrogen oxide formula: NO2 1 accept any compound with the formula XY2, eg magnesium chloride MgCl2 both the name and formula are required for the mark [6] GSHS 8 Y9 Revision Booklet 1 Mark Scheme Energy and electricity/gravity and space 9I & 9J 29 min 31 marks Q1-L4, Q2-L4, Q3-L5, Q4-L6, Q5-L6 1. (a) (i) four arrows, all towards the centre of the Earth 1 A B D C all four arrows, correctly drawn, are required for the mark the arrows may be drawn outside the Earth (b) (ii) ball hanging towards the centre of the Earth at B, C and D all three positions, B, C and D, are required for the mark 1 (i) 365 days accept ‘365’ 1 (ii) 24 hours accept ‘24’ 1 [4] 2. GSHS (a) (i) 5 1 (ii) 60 1 (iii) thermal accept ‘heat’ 1 9 Y9 Revision Booklet 1 (b) radio (c) light bulb Mark Scheme 1 accept ‘bulb’ or ‘light’ or ‘lamp’ 1 [5] 3. (a) (i) circuit A: series circuit B: parallel 1 both answers are required for the mark (b) (c) (i) the circuit or heating element will stop working 1 accept ‘it will not work’ or ‘it will be off’ accept ‘the whole circuit has no current through it’ accept ‘it becomes cooler’ do not accept ‘it breaks the heater or element or it’ (ii) any one from 1 the circuit or element will continue to work one wire will not heat the window accept ‘the bottom one has no current through it’ ‘nothing’ or ‘it will not be affected’ are insufficient accept ‘it will work less well’ accept ‘the bottom wire becomes cooler’ do not accept ‘it becomes cooler’ do not accept ‘it does not work properly’ (i) thermal accept ‘heat’ 1 (ii) from solid to liquid to gas all three states are required for the mark accept ‘from solid to liquid to vapour or steam’ accept ‘from ice to water to vapour or gas’ 1 [5] 4.(a) (i) the dots for Mars, the Earth and Venus should be in a straight line, the shortest possible distance apart 1 Sun V Earth M GSHS 10 Y9 Revision Booklet 1 (ii) any one from it is brightest it looks biggest or bigger Mark Scheme 1 accept ‘it is brighter’ accept ‘it is bigger’ accept ‘you can see it at night’ (b) gravity 1 (c) any one from it is circular it is always the same distance from the Earth 1 (d) winter 1 any one from the Northern hemisphere is tilted away from do not accept ‘the Earth is tilted the Sun away from the Sun’ Britain is in the part of the Earth which is tilted away from the Sun the Sun’s rays hit the Earth at more of an angle accept ‘the Sun appears lower in the sky’ angle accept ‘night is longer than day’ 1 [6] 5. (a) (b) (i) electrical to chemical if more than one box is ticked, award no mark 1 (ii) chemical to electrical to sound if more than one box is ticked, award no mark 1 Q R P 1 1 1 [5] 6. (a) The first marking point is for the transfer of energy from water to turbine. The second marking point is for the transfer of energy from turbine to generator. The third marking point is for the transfer of energy away from the generator. any two from potential energy in the water to kinetic energy in the turbine accept ‘P.E. to K.E.’ accept ‘transferred from the water to the turbine’ accept ‘K.E. in the water to K.E. in the turbine’ accept ‘P.E. in the water to K.E. in the water’ kinetic energy in the turbine to kinetic energy in the generator accept ‘transferred from the turbine to the generator’ GSHS 2 11 Y9 Revision Booklet 1 Mark Scheme kinetic energy in the generator to electrical energy in the circuit accept ‘KE. to electrical energy’ accept ‘from the generator to the circuit’ accept ‘transferred from the generator by electricity’ accept ‘KE. in the turbine to electrical energy in the circuit’ accept ‘potential energy in the water to electrical energy in the circuit’ for both marks accept ‘P.E. to electrical energy’ or ‘from the water to the circuit’ for one mark (b) any one from because the Moon’s pull or gravity is always there because the tides or the water cannot run out or be used up accept ‘because there are tides every day’ or ‘because there is an endless supply’ 1 (c) • from wave energy or from the waves accept ‘Ocean Thermal Energy Conversion’ or ‘OTEC’ do not accept ‘hydro-electric power’ 1 (d) it is easier to control or it can be turned on when it is needed accept ‘the tides only give power at certain times’ or ‘you can build an oil-fired power station anywhere’ or ‘it is smaller` 1 any one from oil is non-renewable it causes pollution accept ‘oil will run out’ accept ‘it gives out greenhouse gases’ or ‘it can cause oil spills’ [6] GSHS 12