UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint. Paper 1 For Examination from 2012 SPECIMEN PAPER 45 minutes

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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint www.xtremepapers.com SCIENCE 3/0 Paper Examination from 202 SPECIMEN PAPER 45 minutes Candidates answer on the Question Paper.

1 UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint SCIENCE 3/0 Paper Examination from 202 SPECIMEN PAPER 45 minutes Candidates answer on the Question Paper. Additional Materials: Ruler READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all questions. You should show all your working in the booklet. 2 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 Total This document consists of 5 printed pages and blank page. UCLES 20 [Turn over

2 2 The diagram shows a plant cell. A C B chloroplast (a) Name the parts labelled A, B and C. A B C [3] (b) Why are chloroplasts important to plants? (c) Name two structures present in a plant cell that are not present in an animal cell. and [2] UCLES 20 3/0/SP/2

3 3 2 The diagram shows a balloon containing air. air (a) Explain how the air particles exert a pressure on the inside of the balloon. [2] (b) The air in the balloon is heated by leaving the balloon in a sunny place. State two effects this has on the air particles. 2 [2] (c) State one way in which the balloon changes when it is left in a sunny place. UCLES 20 3/0/SP/2 [Turn over

4 4 3 Maya investigates the reaction between calcium carbonate and hydrochloric acid. She adds dilute hydrochloric acid to some calcium carbonate (marble chips), at room temperature. She collects the gas given off in a gas syringe. dilute hydrochloric acid syringe calcium carbonate (a) Suggest one safety hazard in this experiment. How can Maya reduce the risk from this hazard? hazard how to reduce the risk [2] (b) Maya measures the volume of gas in the gas syringe every two minutes, until the reaction stops. The graph shows her results. 40 volume of gas / cm time / minutes What is the total volume of gas given off in the reaction? cm 3 UCLES 20 3/0/SP/2

5 5 (c) When the reaction stops, there is still some calcium carbonate in the bottom of the flask. (i) After how many minutes does the reaction stop? (ii) Why does the reaction stop? Tick ( ) the correct box. minutes The calcium carbonate has all reacted. The hydrochloric acid has all reacted. The temperature has risen too high. (d) Maya wants to find out if increasing the temperature increases the rate of the reaction. She repeats her experiment, but this time at a higher temperature. State two variables that Maya should keep the same in her experiment. 2 [2] UCLES 20 3/0/SP/2 [Turn over

6 6 4 (a) A scientist sets up two experiments. In both experiments he has a torch, two pieces of card with holes in them and a screen. (i) The first experiment is shown in diagram. card A holes card B screen torch diagram The scientist could see a spot of light on the screen. Draw the ray of light to show its path on diagram, after it has passed through the hole in card A. (ii) The second experiment is shown in diagram 2. card A holes card B screen torch diagram 2 The hole in card B is not in line with the hole in card A. Draw the ray of light to show its path on diagram 2. (iii) Explain why the light is unable to reach the screen. UCLES 20 3/0/SP/2

7 7 (b) A pinhole camera allows an image of an object to be projected onto a screen. screen object hole Draw two rays of light, one from the bottom of the pencil and one from the top of the pencil, to show how the image forms on the screen. [2] UCLES 20 3/0/SP/2 [Turn over

8 8 5 Some students are investigating a river ecosystem. They use nets to sweep through the water. They empty the contents into a shallow container of water, examine the animals present and record what they see. (a) The diagram shows a student s record. A B C D All four animals can be classified into the same group. Name the group and give a reason for your answer. [2] UCLES 20 3/0/SP/2

9 9 (b) The student uses this key to identify the animals A and B. Fill in the correct names. The animal has one or more breathing tubes extending from the go to 2 end of its abdomen. The animal does not have a long breathing tube extending from go to 3 the end of its abdomen. 2 The animal has a long, thin, stick-like body. Ranatra linearis The animal has an oval-shaped body. Nepa cinerea 3 The front legs are muscular and claw-like. Ilyocoris cimicoides The front legs are not muscular or claw-like. Aphelocheirus aestivalis Animal A is Animal B is [2] UCLES 20 3/0/SP/2 [Turn over

10 0 6 Read the article about Ferdinand Magellan who led the first voyage around the world. the information in this article and your biological knowledge to answer the questions. Magellan s Voyage. Proof that the World is round! In 59, Ferdinand Magellan sailed from Spain to find a western route to the Spice Islands. He took 237 men in five ships. Each ship carried a supply of basic foods including cheese, flour, oil, meat and vegetables. There were also some live animals, including chickens. The ships eventually reached the Spice Islands but only one continued the journey back to Spain. This was the Victoria. The sailors on the Victoria became very ill before they arrived home. They had bleeding gums and sores which would not heal. One sailor though, called Elcarno, used to eat a spoonful of fruit jam every day. He did not develop any of these symptoms. UCLES 20 3/0/SP/2

11 (a) Magellan s ships set sail with basic foods that provided a balanced diet. What is meant by a balanced diet? [2] (b) Suggest why Magellan took some live animals with him on the voyage. (c) Most of the sailors on the Victoria developed a deficiency disease called scurvy. (i) What is meant by a deficiency disease? (ii) Describe one symptom of scurvy. (iii) What is the cause of scurvy? (iv) Suggest why Elcarno did not develop this deficiency disease. UCLES 20 3/0/SP/2 [Turn over

12 2 7 A scientist uses an oscilloscope to record the traces made from four different sounds. The diagrams show the traces made from these four sounds. trace A trace B trace C trace D (a) Which is the loudest sound? (b) Which sound has the highest pitch? (c) The scientist makes a fifth sound. This sound has the same amplitude as the sound that made trace B. It has the same frequency as the sound that made trace D. Draw the trace that his fifth sound makes on the oscilloscope. [2] UCLES 20 3/0/SP/2

13 3 8 The diagram shows the rocks on the sides of a deep quarry. + rock A rock B rock E rock C rock D Rocks A, B and C are sedimentary rocks. They were formed when tiny rock particles built up in layers and were compressed. Rock D was formed when limestone (a sedimentary rock) was heated to a very high temperature, at high pressure, and then cooled. Rock E was formed when hot magma (liquid rock) cooled and solidified. (a) Rock A contains fossils. (i) What is a fossil? (ii) Choose the letters of two other rocks that could contain fossils. [2] and (b) Suggest how the limestone was heated to form rock D. UCLES 20 3/0/SP/2 [Turn over

14 4 9 Ice, water and steam all contain water molecules. Complete these sentences using words from the list. You may use them once, more than once, or not at all. larger than the same as smaller than (a) In steam, the distance between the molecules is the distance between the molecules in water. (b) In steam, the forces between the molecules are the forces between the molecules in water. (c) In water, the mass of one molecule is the mass of one molecule in steam. UCLES 20 3/0/SP/2

15 5 0 Amulu uses this apparatus to measure the density of water g The sentences describe his experiment for measuring the density of the water, but they are not in the correct order. A Pour 50 cm 3 water into the measuring cylinder. B Divide the mass of the water by 50. C Remove the empty measuring cylinder from the scales. D Place the empty measuring cylinder on the scales. E Subtract the mass of the measuring cylinder from the mass of the measuring cylinder and water. F Note the mass of the empty measuring cylinder. G Note the mass of the measuring cylinder and water. H Place the measuring cylinder and water on the scales. Write the correct order in the boxes. The first one has been done for you. D [5] UCLES 20 3/0/SP/2

16 6 BLANK PAGE 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 holders, 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 department of the University of Cambridge. UCLES 20 3/0/SP/2

17 UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint SCIENCE 3/02 Paper 2 Examination from 202 SPECIMEN PAPER 45 minutes Candidates answer on the Question Paper. Additional Materials: Ruler READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all questions. You should show all your working in the booklet. 2 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 Total This document consists of 5 printed pages and blank page. UCLES 20 [Turn over

18 2 BLANK PAGE UCLES 20 3/02/SP/2

19 3 Litmus is made from a plant pigment. It is red when placed in an acidic solution. It is blue when placed in an alkaline solution. It is purple when neutral. (a) What do we call substances that change colour like this? (b) What colour would litmus be in a solution of ph 0? (c) What colour would you expect litmus to be in pure water? (d) Excess acid in the stomach can cause indigestion. What would be the safest thing to neutralise excess acid in the stomach? Tick ( ) the correct box. vinegar (acid) salt water (neutral) sodium hydrogencarbonate (mild alkali) caustic soda (strong alkali) UCLES 20 3/02/SP/2 [Turn over

20 4 2 A plant called Himalayan balsam produces seed pods. These pods explode and the seeds shoot out in all directions. (a) Carlos finds 75 seeds on the ground around a Himalayan balsam plant. He measures the distance of each seed from the plant. The table shows his results. distance of seeds from plant / cm number of seeds (i) Draw a histogram to display these results number of seeds distance travelled by seeds / cm [3] (ii) How many seeds travelled more than 200 cm? UCLES 20 3/02/SP/2

21 5 (b) Although the seeds shot out in all directions, they were not spread evenly around the plant. The diagram shows where Carlos finds the seeds around the plant. North 38 seeds 79 seeds West plant East 5 seeds 43 seeds South Carlos thinks that more seeds are in the north-east section because the wind blew from the south-west. He wants to find more evidence to decide if his explanation might be correct. Which two pieces of evidence would support his explanation? Tick ( ) the two correct boxes. There are always more seeds close to the plant than further away. When the wind blows from the south-east, the smallest number of seeds is found in the south-east section. When there is no wind, the seeds are found in equal numbers in each section. (c) The spreading of seeds away from the parent plant is called dispersal. Suggest two reasons why seed dispersal is useful to Himalayan balsam plants. 2 [2] UCLES 20 3/02/SP/2 [Turn over

22 6 3 The diagram shows the Earth moving around the Sun. Sun (a) What causes day and night on Earth? Tick ( ) the correct box. The Earth moves round the Sun once every 24 hours. The Earth spins on its axis once every 24 hours. The Sun moves round the Earth once every 24 hours. The Sun spins on its axis once every 24 hours. (b) Two students are discussing the Sun and the Moon. Luca says: The Sun gives out light that it produces itself. Anya says: The Moon does not give out light. It only reflects light from the Sun. Who is correct? Tick ( ) the correct box. Luca only Anya only both Luca and Anya neither Luca nor Anya (c) Underline the two words in the list that are the names of planets. Earth Jupiter Moon Sun UCLES 20 3/02/SP/2

23 7 4 The diagrams show some arrangements of particles. Write the letter of the diagram that represents (a) molecules of a compound (b) an element made up of atoms (c) a mixture of different elements. UCLES 20 3/02/SP/2 [Turn over

24 8 5 Sam and Shakira make an electromagnet as shown. iron core power supply coil of insulated copper wire iron filings Their teacher asks them to plan an experiment to answer this question. Does wrapping more coils around the magnet make it stronger? She tells them that they can test the strength of their magnets by measuring the mass of iron filings that they pick up. The diagram shows the changes that Sam and Shakira make to their magnets when they begin their experiment. iron core iron core power supply coils made of insulated steel wire power supply coils made of insulated copper wire iron filings iron filings Sam Shakira (a) Explain why Sam s experiment will not answer the teacher s question. [2] UCLES 20 3/02/SP/2

25 9 (b) These are the results that Shakira writes down. She writes them in the order that she collects them. number of coils 5, 0, 5, 20, 25, 30 mass of iron filings in grams 2, 6, 23, 8, 22, 25 (i) In the space, draw a results table and complete it by writing in Shakira s results. a ruler to draw your results chart. [2] (ii) Describe the pattern in Shakira s results. (iii) In your results chart, draw a circle around the result that does not fit the pattern. (iv) Suggest one way in which Shakira could make her results more reliable. UCLES 20 3/02/SP/2 [Turn over

26 0 6 There are about 35 different species in the dog family. (a) The diagrams show three different species within the dog family. These are a fox, a jackal and a wolf. fox jackal wolf (i) Describe one way, shown in the diagrams, in which a wolf differs from both the fox and the jackal. (ii) Foxes, jackals and wolves are classified by scientists as three separate species. Explain why. (b) Modern domestic dogs are thought to have descended from wolves. Humans may have caught and tamed wolves and kept them to help with hunting. Modern domestic dogs are thought to have evolved about years ago. The diagrams show four breeds of modern domestic dogs. Although they look different, they all belong to the same dog species which scientists call Canis familiaris. collie corgi labrador pekinese (i) What word is used to describe the differences between animals of the same species? UCLES 20 3/02/SP/2

27 (ii) Wild dog species such as foxes or jackals are all very similar to each other. Modern domestic dogs have many differences in size, shape and colour. Explain why. [2] UCLES 20 3/02/SP/2 [Turn over

28 2 7 Write the missing terms in these energy transformation diagrams. UCLES 20 3/02/SP/2

29 3 8 Read this information about plants and animals in a garden. the information to answer the questions. A gardener grows cabbages in her garden. Some of the cabbages are eaten by caterpillars. Birds eat some of the caterpillars. Snakes eat some of the birds. (a) (i) the information to complete the food chain. Write your answers in the boxes. [2] (ii) Name one organism in the food chain which is a predator. (iii) Which organism is a producer? (b) The gardener sprays her cabbages with a chemical to kill the caterpillars. What will happen to the number of birds? Explain why. UCLES 20 3/02/SP/2 [Turn over

30 4 9 (a) When sodium is added to water, a new compound is formed, a gas is produced and heat is given out in the reaction. (i) Write the correct scientific word that is used to indicate that heat is given out in a reaction. (ii) Complete the word equation. [2] (b) Put a tick ( ) if heat is given out in the process. burning evaporation melting neutralisation [2] UCLES 20 3/02/SP/2

31 5 0 The boxes A, B and C show particles of substances in one of three different physical states: solid, liquid and gas. A B C particles of substance (a) Write the letter of the box which (i) contains a liquid. (ii) contains particles vibrating about fixed positions. (b) How could the particles in the box you have given in (a) (ii) be made to vibrate more quickly? (c) (i) Write the letter of the box in which the particles would quickly escape if the top of the box was removed. (ii) What is the name of the process by which the particles escape? Underline the correct answer. evaporation diffusion vaporisation (iii) Why do the particles escape? UCLES 20 3/02/SP/2

32 6 BLANK PAGE 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 holders, 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 department of the University of Cambridge. UCLES 20 3/02/SP/2

33 UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint SCIENCE 3/0 Paper Examination from 202 SPECIMEN MARK SCHEME 45 minutes MAXIMUM MARK: 50 This document consists of 6 printed pages. UCLES 20 [Turn over

34 2 Question Part Mark Answer Further Information (a) 3 (b) (c) 2 Total 6 A cytoplasm B cell wall C nucleus for photosynthesis / to absorb light cell wall (large) vacuole chloroplast any two for mark each If three answers given and one is wrong, give mark only. Question 2 Part Mark Answer Further Information (a) 2 moving particles of air hit sides (b) 2 (c) Total 5 speed up collide with each other with more force collide more often move apart bigger / enlarge / burst / hotter any two from the list UCLES 20 3/0/SM/2

35 3 Question 3 Part Mark Answer Further Information (a) 2 acid (burns) wear safety specs / wear protective clothing (b) 40 (c) (i) (ii) 6 The calcium carbonate has all reacted. mass of marble chips / calcium carbonate (d) 2 Total 7 size of marble chips / calcium carbonate concentration of acid any two, mark each Question 4 Part Mark Answer Further Information (a) (i) straight line through both holes onto screen (ii) line drawn to show it hitting card B / missing hole in card B (iii) light travels in straight lines Accept cannot pass through card. (b) 2 2 straight lines, both through hole Total 5 lines hitting the screen, crossing over each other UCLES 20 3/0/SM/2 [Turn over

36 4 Question 5 Part Mark Answer Further Information (a) 2 insect: 3 pairs jointed legs Accept arthropod, exoskeleton and jointed legs. (b) 2 A is Nepa cinerea B is Ilyocoris cimicoides Total 4 Question 6 Part Mark Answer Further Information (a) 2 (b) food must have a wide variety / contain all the essential nutrients these should be in the correct amounts / proportions to provide fresh meat / eggs / source of protein Accept: They could not preserve some foods very easily. Animals may produce young. (c) (i) disease caused by the lack of an important nutrient e.g. vitamin or mineral (ii) bleeding gums / sores which will not heal (iii) lack of vitamin C (iv) fruit contains vitamin C / he ate jam / he ate fruit If error in (c) (iii), mark (c) (iv) according to answer in (c) (iii). Total 7 UCLES 20 3/0/SM/2

37 5 Question 7 Part Mark Answer Further Information (a) D (b) B (c) 2 wave centred on horizontal line and touching first line above and below it (as in B) Total 4 wave has one peak and one trough (as in D) Question 8 Part Mark Answer Further Information (a) (i) 2 remains of living organism changed to rock / preserved in rock allow named living organism allow equivalent of rock, e.g. stone (ii) B and C both required for mark (b) by the (hot) magma / by rock E Total 4 Question 9 Part Mark Answer Further Information (a) larger than (b) smaller than (c) the same as Total 3 UCLES 20 3/0/SM/2 [Turn over

38 6 Question 0 Part Mark Answer Further Information correct order scores 5 5 F C A H G E B allow one mark if: starts with F ends with B has AHG (in that order) anywhere has HE (in that order) anywhere Total 5 UCLES 20 3/0/SM/2

39 UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint SCIENCE 3/02 Paper 2 Examination from 202 SPECIMEN MARK SCHEME 45 minutes MAXIMUM MARK: 50 This document consists of 5 printed pages and blank page. UCLES 20 [Turn over

40 2 Question Part Mark Answer Further Information (a) indicators (b) blue (c) purple (d) sodium hydrogencarbonate Total 4 Question 2 Part Mark Answer Further Information (a) (i) 3 6 correctly drawn bars 6 correct bars = 3 marks 4 or 5 correct bars = 2 marks 2 or 3 correct bars = mark 0 / correct bars = 0 mark (ii) 20 (b) second two boxes ticked if first box ticked = 0 mark both correct = mark (c) 2 idea of colonising new areas idea of reducing competition Total 7 Question 3 Part Mark Answer Further Information (a) The Earth spins on its axis once every 24 hours. (b) both Luca and Anya (c) Total 3 Earth and Jupiter underlined if three or more names underlined = 0 mark UCLES 20 3/02/SM/2

41 3 Question 4 Part Mark Answer Further Information (a) D (b) A (c) B Total 3 Question 5 Part Mark Answer Further Information (a) 2 has steel wire / should have copper wire introduces another variable / changing too many things (b) (i) 2 table has 2 ruled rows and 7 ruled columns (or vice versa) + each column or row headed with units all values correctly entered all correct = 2 marks 2 errors = mark more than 2 errors = 0 mark accept converse (ii) the more coils, the greater the mass of iron filings (iii) 5 coils/23 g (iv) repeat the experiment Total 7 UCLES 20 3/02/SM/2 [Turn over

42 4 Question 6 Part Mark Answer Further Information (a) (i) the wolf is bigger / has a more powerfully built body / larger head / jaws or vice versa Allow any feature visible on the diagrams. (ii) They are distinct and cannot interbreed. / They do not produce fertile offspring. (b) (i) Variation / diversity (ii) 2 Domestic dogs have been bred by people. Accept the converse. People have selected characteristics. Total 5 Question 7 Part Mark Answer Further Information (a) movement/kinetic (b) heat/thermal (c) light (d) light (e) potential Total 5 UCLES 20 3/02/SM/2

43 5 Question 8 Part Mark Answer Further Information (a) (i) 2 cabbage caterpillar bird snake if order reversed = mark (ii) bird / snake (iii) cabbage (b) Total 5 go down (less food) / stay the same (eat other things) Accept either or both alternatives. Question 9 Part Mark Answer Further Information (a) (i) (ii) 2 exothermic sodium hydroxide hydrogen (b) 2 Total 5 burning neutralisation if 3 ticks = mark Question 0 Part Mark Answer Further Information (a) (i) (ii) A B (b) heat / warm (c) (i) (ii) (iii) C diffusion they are moving / in motion Total 6 UCLES 20 3/02/SM/2

44 6 BLANK PAGE UCLES 20 3/02/SM/2

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint. Paper 2 For Examination from 2012 SPECIMEN PAPER 45 minutes

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint www.xtremepapers.com SCIENCE 1113/02 Paper 2 Examination from 2012 SPECIMEN PAPER 45 minutes Candidates answer on the Question Paper.