[PDF] Cambridge Secondary Checkpoint - Science (1113) October 2017 Paper 2 MS.pdf | Plain Text

This document consists of 11 printed pages and 1 blank page. IB17 10_1113_02/2RP © UCLES 2017 [Turn over Cambridge International Examinations Cambridge Secondary 1 Checkpoint SCIENCE 1113/02 Paper 2 October 2017 MARK SCHEME Maximum Mark: 50 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the details of the discussions that took place at an Markers’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the End of Series Report. Cambridge will not enter into discussions about these mark schemes.

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 2 of 13 Annotations and abbreviations / OR alternate responses for the same marking point ( ) the words or units in brackets do not need to not need to be stated Accept an acceptable response Do not accept indicates an incorrect response that would contradict another otherwise correct alternative Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent working is correct ora or reverse argument note provides extra information when necessary

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 3 of 13 Question Answer Marks Further Information 1(a)(i) carbohydrates 1Accept fibre / starch 1(a)(ii) for energy 1Accept to prevent constipation if fibre given in (a)(i) Accept ecf if protein given 1(b) vitamins 1Ignore letter of vitamin 1(c) any one from heart disease / obesity / high blood pressure 1Accept diabetes / stroke / high cholesterol / plaque in blood vessels

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 4 of 13 Question Answer Marks Further Information 2(a) The particles in solids are close together which means solids cannot be squashed . When a liquid evaporates the particles separate . When a solid changes into a liquid it is said to melt . 3 2(b) idea that particles are moving = 1 mark but idea that particles are spreading out / move further apart = 2 marks 2 Accept particles move anywhere = 2 marks

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 5 of 13 Question Answer Marks Further Information 3(a)(i) 6 (complete) waves 1 3(a)(ii) stays the same 1Accept nothing happens 3(b) any two from height of wave decreases amplitude of wave decreases (because) less sound (reaches the microphone) / the sound is quieter frequency remains the same / pitch remains the same wavelength remains the same 2 Accept amplitude is lower Accept (because) volume (of sound) decreases / loudness decreases Accept number of compete waves stays the same

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 6 of 13 Question Answer Marks Further Information 4(a) amphibians bird fish mammals reptiles 1 4(b) presence of hair / fur presence of external ears 2features must be exclusive to mammals Question Answer Marks Further Information 5(a)(i) colour goes red / pink 1 5(a)(ii) the idea of many colour changes available / will give you a pH value 1Accept can tell how acidic the soil is 5(b) evaporation fertilization fossilization neutralisation respiration 1more than one answer circled = 0 marks

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 7 of 13 Question Answer Marks Further Information 6(a) (idea that) the Earth has moved 1 6(b) same as the pattern in June same as the pattern in December a different pattern 1more than one answer circled = 0 marks Question Answer Marks Further Information 7(a) any two from the number of bubbles / the volume of oxygen or gas the distance of the lamp from the water plant time 2 7(b) The further the lamp is from the water plant the fewer the bubbles of gas produced. or The further the lamp is from the water plant the slower it photosynthesises. 1Accept ora e.g. The closer the lamp is to the water plant the more bubbles of gas were produced.

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 8 of 13 Question Answer Marks Further Information 8(a) (B) C A D   1 8(b) magnesium zinc iron lead 2magnesium and zinc = 1 mark iron and lead = 1 mark 8(c) zinc nitrate lead 2each correct answer = 1 mark either order Question Answer Marks Further Information 9 4000 400 10 (N / cm 2) 2

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 9 of 13 Question Answer Marks Further Information 10(a) any two from honey is not the longest time / corn syrup has the longest time corn syrup has the most friction most friction would have the longest time 2no mark for yes or no note if yes = 0 marks for the question note just quoting the times is not sufficient a comparison must be made 10(b) increase the depth of the liquid / idea of changing the temperature 1Accept changes to liquids e.g. use thicker liquids Accept increase amount of liquid / use a taller container Question Answer Marks Further Information 11(a) Jupiter and Mars 1both required either order 11(b) Saturn is closer to the Sun so should have less time to orbit the Sun (compared to Uranus) 1 Accept ora

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 10 of 13 Question Answer Marks Further Information 12 cell function asorbs water and mineral ions from the soil transmits nerve impulses around the body fertilises the egg cell carries oxygen around the body 2all three correct = 2 marks two correct = 1 mark one correct = 0 marks Question Answer Marks Further Information 13 A and C different types of atoms are not joined / different elements are not bonded / different substances not bonded together 3each correct letter = 1 mark marking point 3 is dependent on all letters being correct

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 11 of 13 Question Answer Marks Further Information 14(a) 1note arrow must be vertically downwards note arrow can be any length 14(b) friction 1 14(c) air resistance 1Accept friction / drag Question Answer Marks Further Information 15(a) fan-tailed has an extra set of tail feathers 1note assume unqualified answers refer to the fan-tailed dove Accept has a fan-tail 15(b) streamlined shape / large wings / big wings / powerful wings 1Accept aerodynamic shape

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 12 of 13 Question Answer Marks Further Information 16 A 4 = 0.4 amps A 5 = 1.8 amps 2 Question Answer Marks Further Information 17(a) bacteria / fungi 1 Accept named bacteria or fungi 17(b) soil C is alkaline / soil C has a higher pH 1 note assume unqualified answers refer to soil C Accept ora

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2017 PUBLISHED ©UCLES 2017 Page 13 of 13 BLANK PAGE