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SCIENCE_S7_02_7RP © UCLES 2018 *1255349087* Cambridge Lower Secondary Progression Test Science paper 2 Stage 7 45 minutes 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. For Teacher’s Use Page Mark 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Total2 S/S7/02 © UCLES 2018 For Teacher’s Use 1 The drawing shows a bat that lives in dark caves. Bats catch and eat flying insects. (a) Bats have adaptations that enable them to fly. Describe two of these adaptations that are shown in the drawing. 1 ....................................................................................................................................... 2 ....................................................................................................................................... [2] (b) The bat’s mouth is adapted to catch and eat large insects. Suggest how the mouth is adapted. ...................................................................................................................................... [1]
3 S/S7/02 © UCLES 2018 [Turn over For Teacher’s Use 2 Mia has a new scooter. frame tyre (a) Draw a line from the part of the scooter to the material used to make it. material clay steel tyre frame rubber foam part of scooter [2] (b) Some scooters have a frame made of aluminium. Write down two properties of aluminium that make it useful for making the frame. 1 ....................................................................................................................................... 2 ....................................................................................................................................... [2]
4 S/S7/02 © UCLES 2018 For Teacher’s Use 3 Pierre draws the position of the Sun at different times of the day. position of Sun at midday in the summer Sun Pierre’s house (a) Why does the Sun appear to move in the sky during the day? ...................................................................................................................................... [1] (b) Why is the position of the Sun in the summer sky different from its position in the winter sky? Circle the correct answer. the Earth has a tilted axis the Earth is further from the Sun the Sun has a tilted axis the Sun is closer to the Earth [1]
5 S/S7/02 © UCLES 2018 [Turn over For Teacher’s Use 4 Louis Pasteur did the following experiment. step A The flask was heated so that the broth boiled.step C The neck of the flask was broken off. It was left for one week. Microorganisms grew. broken neck of flask step B The flask was cooled to room temperature and left for a few weeks. No microorganisms grew. broth (a) Why did Louis Pasteur boil the broth at the beginning of the experiment? ...................................................................................................................................... [1] (b) Why did no microorganisms grow in step B? ...................................................................................................................................... [1]
6 S/S7/02 © UCLES 2018 For Teacher’s Use 5 Oliver investigates change of state. He puts crushed ice into a beaker and heats it gently. apparatus X beaker crushed ice tripod HEATgauze Every 2 minutes Oliver records the temperature using apparatus X. (a) What is the name of apparatus X? ...................................................................................................................................... [1] (b) The table shows Oliver’s results. time of heating in minutestemperature in °C 00 20 420 640 850 10 80 (i) Describe the pattern in these results after the first 2 minutes. .................................................................................................................................. ..............................................................................................................................[1] (ii) Which result does not fit this pattern? temperature ....................... C [1]
7 S/S7/02 © UCLES 2018 [Turn over For Teacher’s Use (c) Complete these sentences. In the first 2 minutes ice changes state from a ................................................... to a ................................................... . In the next two minutes the particles gain more ..................................................... and move ................................................... . [2] 6 The Earth is made of several layers. Here is a diagram showing the different layers of the Earth. Complete the sentences about the structure of the Earth. (a) The centre of the Earth is called the ............................... . [1] (b) The mantle contains some liquid rock. This liquid rock is called ............................... . [1] (c) Liquid rock that erupts from volcanoes is called ............................... . [1] (d) When the liquid rock cools it turns into a type of rock called ............................... rock. [1]
8 S/S7/02 © UCLES 2018 For Teacher’s Use 7 A truck is moving forward. Forces act on the truck. 60 N 100 N (a) What happens to the truck? Circle the correct answer. does not move moves backwards turns left speeds up slows down [1] (b) The force labelled 100 N is the driving force. Write down the name of the force labelled 60 N. ...................................................................................................................................... [1]
9 S/S7/02 © UCLES 2018 [Turn over For Teacher’s Use (c) (i) Draw one arrow on the truck to show the weight. [1] (ii) The weight of the truck is increased. What does gravity do to the truck? Circle the correct answer. moves it backwards moves it downwards moves it forwards moves it upwards speeds it up [1]
10 S/S7/02 © UCLES 2018 For Teacher’s Use 8 Jamila and Youssef investigate variation in the length of seeds. They • use 50 seeds • measure the length of 47 seeds • do not have time to measure the length of 3 seeds. (a) Measure the length of the 3 seeds. Put your length in the box below the seed. length of seed in mm [1] (b) Complete the tally chart with the lengths of the 3 seeds you have measured. length of seeds in mm14–15 16–17 18–19 20–21 22–23 tally (each / = 1 seed) / / / / / // / / / / / / / / / / // / / / / / / / / / / / / / / // / / / / / / / / / / / / total number of seeds of each size6 .............. .............. .............. 5 [3]
11 S/S7/02 © UCLES 2018 [Turn over For Teacher’s Use (c) Use the tally chart to complete the histogram on the grid. Label the y-axis. The x-axis has been done for you. 14 – 15 16 – 17 18 – 19 20 – 21 22 – 23 length of seeds in mm ........................ ........................ ........................ [3] 9 Universal Indicator can be used to estimate the pH value of a solution. (a) Which is the best description for a solution with a pH of 5? Tick ( ) the correct box. neutral strongly acidic strongly alkaline weakly acidic weakly alkaline [1] (b) What is the pH of a neutral solution? ..................................... [1]
12 S/S7/02 © UCLES 2018 For Teacher’s Use 10 Ostriches belong to a group of vertebrates. The drawing shows an ostrich. (a) To which group of vertebrates do ostriches belong? ...................................................................................................................................... [1] (b) Use the drawing to give two reasons for your answer to (a). 1 ....................................................................................................................................... 2 ....................................................................................................................................... [2] 11 Draw a line from each type of energy to its description. type of energy description chemical heat (thermal) gravitational potential elastic potential kinetic energy it has because it is moving energy stored in food or fuel energy it has because it has changed shape energy it has because of its position energy that flows because of a temperature difference [3]
13 S/S7/02 © UCLES 2018 [Turn over For Teacher’s Use 12 Friction is a type of force. (a) Here are some sentences about friction. Friction acts in the opposite direction to motion. Friction can be reduced by using oil. Friction can be useful. Friction is a force that slows down moving objects. How many of these sentences are true? Circle the correct answer. 0 1 2 3 4 [1] (b) Ice skates have thin blades. thin blade There is a layer of water between the thin blade and the ice. Explain how this layer of water helps the skater. .......................................................................................................................................... .......................................................................................................................................... ...................................................................................................................................... [2]
14 S/S7/02 © UCLES 2018 For Teacher’s Use 13 These organisms all live in the ocean. crustacean dolphin fish killer whale phytoplankton The organisms all belong to the same food chain. Read the information to help you work out the food chain. • crustacean – eats phytoplankton and is the prey of fish • dolphin – is a predator of fish • killer whale – is the top predator in the food chain • phytoplankton – is a microscopic producer that uses energy from sunlight Write the names of the five organisms in the correct boxes to complete the food chain. sunlight ........................................... ........................................... ........................................... ........................................... ........................................... [2]
15 S/S7/02 © UCLES 2018 [Turn over 14 Some substances are metals and other substances are non-metals. Metals often have high melting and boiling points, but non-metals often have low melting and boiling points. Write down two other differences between metals and non-metals. 1 ............................................................................................................................................. ............................................................................................................................................. 2 ............................................................................................................................................. ............................................................................................................................................. [2]
16 S/S7/02 © UCLES 2018 Copyright © UCLES, 2018 Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge. 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. 15 This question is about different planets. (a) Which planet has the largest orbit? Circle the correct answer. Earth Jupiter Mercury Saturn Venus [1] (b) Which planet takes the shortest time to orbit the Sun? Circle the correct answer. Earth Jupiter Mercury Saturn Venus [1] (c) Chen finds this information using the internet. It shows how much two people weigh on different planets. planet weight in Nweight in N Mercury 190 285 Venus 450 682 Earth 500 750 Jupiter 1170 1755 Saturn 530 795 (i) Chen has a weight of 600 N on Earth. Estimate Chen’s weight on Mercury. Circle the correct answer. 130 N 190 N 230 N 285 N [1] (ii) Chen’s friend has a mass of 50 kg on Earth. What is his mass on Venus? .................................................. kg [1]