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© UCLES 2011 P110/02/A/M/11 [Turn over 1 For Teacher's Use 45 minutes Science Paper 2 Stage 8 Name ……………………………………………\ …….………………………. Additional materials: Ruler READ THESE INSTRUCTIONS FIRST Answer all questions in the spaces provided on the question paper. You should show all your working on the question paper. The number of marks is given in brackets [ ] at the end of each question\ or part question. The total number of marks for this paper is 50. V1 For Teacher's Use Page Mark 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Total
© UCLES 2011 P110/02/A/M/11 2 For Teacher's Use 1 (a) Here is a diagram of a bar magnet. A magnet has a North pole, N, and a South pole, S. NS (i) Draw the magnetic field lines for this bar magnet. Show the direction of the field lines with arrows. [2] (ii) What piece of apparatus can be used to show the direction of field lines\ ? [1] (b) Here is a diagram of a weaker bar magnet. Draw field lines to show that it is a weaker bar magnet. NS [1]
© UCLES 2011 P110/02/A/M/11 [Turn over 3 For Teacher's Use (c) Tick ( ) the two correct statements about magnets. 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]
© UCLES 2011 P110/02/A/M/11 4 For Teacher's Use 2 The diagram shows the human circulatory system. brain heart lungs aorta digestive tract liver kidneys (a) Why do humans need a heart in the circulatory system? [1] (b) Complete the sentences about the three types of blood vessels. The blood vessel that carries blood away from the heart is the aorta. It is the largest in the body. The smallest blood vessels are called . These allow substances to reach the surrounding tissues. The blood returns to the heart in . These blood vessels have valves in them. [3]
© UCLES 2011 P110/02/A/M/11 [Turn over 5 For Teacher's Use (c) Plaque can form on the inside of blood vessels. blood vessel wall plaque blood clot (i) Why does plaque form in blood vessels? [1] (ii) What effect does plaque have on the circulatory system? [1]
© UCLES 2011 P110/02/A/M/11 6 For Teacher's Use 3 (a) The three states of matter are solid, liquid and gas. Complete the table to show their properties. property solid liquid gas shape fixed shape same shape as container volume fixed volume fills the entire container can it flow? no can it be compressed? only a little bit [3] (b) The particle theory of matter can be used to explain these properties. Circles have been used to represent the particles of a liquid. liquid (i) Draw circles to represent the particles of a solid and of a gas. solid gas [2]
© UCLES 2011 P110/02/A/M/11 [Turn over 7 For Teacher's Use (ii) Liquids can only be compressed a little bit. Explain why. [1] (c) Gases exert a pressure on the walls of a container. What causes this pressure? [1] 4 Plants make their own biomass using photosynthesis. Tick ( ) the boxes next to the two substances needed for photosynthesis. [2] carbon dioxide oxygen water starch oil glucose
© UCLES 2011 P110/02/A/M/11 8 For Teacher's Use 5 Tomas investigates coloured lights. (a) Tomas shines red, green and blue light onto a green object. He draws a diagram to help explain what happens. (i) What colour does the object appear? [1] (ii) Explain what happens at the surface of the green object. [2] (b) Tomas adds some coloured lights together. (i) Draw lines to match the colours added together and the colour produced . colours added together colour produced red and green yellow red and blue cyan blue and green magenta [1] (ii) What happens if red, green and blue lights of equal intensity are added together? [1] blue light green light red light green object
© UCLES 2011 P110/02/A/M/11 [Turn over 9 For Teacher's Use 6 A woman has a menstrual cycle about every 28 days. (a) Put the statements into the correct order. The first one has been done. statement order Ovulation occurs. The levels of the female sex hormones drop quickly. Inner lining of uterus starts to be lost as menstrual blood. The egg cell (ovum) travels from the ovary to the uterus. A new egg cell (ovum) starts to develop in the ovary. 1 [2] (b) What happens to the menstrual cycle if the egg cell (ovum) is fertilis\ ed by a sperm cell? [1] (c) If an egg cell (ovum) is fertilised, a foetus can develop in the femal\ e reproduction system. (i) Where does fertilisation occur? Circle the correct answer. ovary oviduct uterus [1] (ii) Where does the foetus develop? [1]
© UCLES 2011 P110/02/A/M/11 10 For Teacher's Use 7 Alisa makes an electromagnet. turns of wire iron nail cell switch paper clips She uses the electromagnet to attract steel paper clips. Here are the 20 paper clips she uses. Alisa changes the number of turns of wire around the nail. She writes down how many paper clips are attracted together, in a chain,\ at the point of the nail. (a) (i) What do you predict will happen? As the number of turns of the wire increases, the number of paper clips \ attracted will . [1]
© UCLES 2011 P110/02/A/M/11 [Turn over 11 For Teacher's Use (ii) Why do you think this will happen? [1] (b) Here are Alisa’s results. number of turns of wire number of paper clips attracted 8 4 12 2 16 10 20 6 (i) Describe the pattern of Alisa’s results. [1] (ii) These results may not match your prediction. Suggest why some of Alisa’s results are anomalous. [1] (iii) Suggest one way Alisa could improve the investigation. [1]
© UCLES 2011 P110/02/A/M/11 12 For Teacher's Use 8 Jamal investigates the diffusion of ink in water. He uses this apparatus. 10°C 20°C 30°C 40°C 50°C 60°C Jamal records the time it takes for the ink in each tube to diffuse even\ ly. Here are his results. temperature of water in °C time taken to diffuse in minutes 10 24 20 23 30 16 40 12 50 8 60 4 (a) The same volume of water is used in each test tube. Why is this important? [1]
© UCLES 2011 P110/02/A/M/11 [Turn over 13 For Teacher's Use (b) Jamal draws a graph. 0 50 40 30 20 60 10 25 20 15 10 5 temperature of water / °C time / minutes (i) Finish plotting the graph using Jamal’s results. [1] (ii) Jamal thinks that the result for one temperature is wrong. The wrong result is at °C. [1] (iii) Draw the best straight line through the correct points. [1] (c) Jamal notices his results show a pattern. Describe the pattern of his results. [1] (d) Suggest one way Jamal could improve his investigation. [1]
© UCLES 2011 P110/02/A/M/11 14 For Teacher's Use 9 Air is made up of a mixture of different substances. Fatima measures the amount of substances in the air on one day. nitrogen oxygen carbon dioxide (a) (i) Which substance is there most of? [1] (ii) Circle one substance from the pie chart that is a compound. carbon dioxide nitr ogen oxygen [1] (iii) Explain how you can tell it is a compound. [1] (b) Copper reacts with oxygen. Tick ( ) the box next to the correct equation for this reaction. [1] copper + oxygen copper oxide copper + oxygen copper carbonate copper + oxygen copper sulfate copper + oxygen copper chloride
© UCLES 2011 P110/02/A/M/11 [Turn over 15 For Teacher's Use 10 The effects of smoking cigarettes can be demonstrated. cigarette holder lighted cigarette cotton wool to pump (a) (i) Describe what happens to the cotton wool during the demonstration. [1] (ii) Why does this happen? [1] (b) What part of the body does the cotton wool represent? [1] (c) Describe one effect of smoking on health. [1]
Permission to reproduce items where third-party owned material protected\ by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holde\ rs, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a depa\ rtment of the University of Cambridge. © UCLES 2011 P110/02/A/M/11 16 BLANK PAGE