[PDF] Cambridge Primary Checkpoint - Science (0843) November 2007 Paper 2.pdf | Plain Text

This document consists of 19 printed pages and 1 blank page. IB07 11_0843_02/3RP © UCLES 2007 [Turn over *8539460040* For Examiner's Use Page Total 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Total UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International Primary Achievement Test SCIENCE 0843/02 Paper 2 October/November 2007 45 minutes Candidates answer on the Question Paper. Additional Materials: Pen Calculator Pencil Ruler READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name in the spaces at the\ top of this page. Write in dark blue or black pen. DO NOT WRITE IN ANY BARCODES. Answer all questions. The number of marks is given in brackets [ ] at the end of each questio\ n or part question. You should show all your working in the booklet.

2 Page Total © UCLES 2007 0843/02/O/N/07 1 The x-ray shows the bones of a baby rabbit. (a) What is this collection of bones called? [1] (b) Having bones allows the rabbit to move. Give one other reason why the bones are important to the baby rabbit. [1] (c) What must be attached to the bones to allow the rabbit move? [1] (d) How will the bones look different in an adult rabbit? [1]

3 Page Total © UCLES 2007 0843/02/O/N/07 [Turn over 2 This drawing shows the bones and muscles in the human arm. A B lower arm upper arm (a) What must the muscles do to raise up the lower arm? Tick (
) one box. Both muscles A and B must contract (shorten). Both muscles A and B must relax. Muscle A contracts (shortens) and muscle B relaxes. Muscle B contracts (shortens) and muscle A relaxes. [1] (b) Name an organ in the human body that is made from muscle. [1]

4 Page Total © UCLES 2007 0843/02/O/N/07 3 New oak trees grow from acorns produced by the oak tree. (a) These sentences describe germination but they are in the wrong order. Use the boxes to write the correct order. 1. A tiny root grows downwards into the soil. 2. A tiny shoot grows upwards towards the light. 3. Leaves start to grow so the seedling can make its own food. 4. The seed coat cracks open. [2] (b) Underline three things that seeds need to germinate. air light soil warmth water [2] (c) Acorns are dispersed by animals. Birds collect the acorns and bury them \ in the ground to eat later. Sometimes they do not collect them and the seeds are left in the ground to grow. Describe one other way that animals can disperse seeds. [1]

5 Page Total © UCLES 2007 0843/02/O/N/07 [Turn over 4 Sairah is investigating different materials. First she wants to find out which is the hardest rock. She scratches each rock with a different object. She records whether her\ scratch made a mark. This table shows her results. Type of Rock fingernail coin matchstick plastic knife Marble no mark mark no mark no mark Sandstone no mark mark no mark mark Talc mark mark mark mark Granite no mark no mark no mark no mark (a) Which is the hardest rock she tested? [1] (b) What evidence in the table shows that talc is the softest rock she tested? [1] (c) She does another test. She finds that both sandstone and talc are permeable . What does permeable mean? Tick (
) one box. has a smooth texture is hard and shiny lets water soak through stops water getting through [1]

6 Page Total © UCLES 2007 0843/02/O/N/07 5 C B A (a) Name part A. [1] (b) Name part B. [1] (c) The job of part B is to produce pollen. Why is pollen important? Tick (
) one box. It is the female sex cell. It is the male sex cell. It provides food for the plant. It grows into a new plant. [1]

7 Page Total © UCLES 2007 0843/02/O/N/07 [Turn over (d) This flower has large petals to attract insects. For which process is this important? Tick (
) one box. dispersal fertilisation germination pollination [1] (e) All plants need to produce new plants so their species can survive. What is the name of this life-process? [1]

8 Page Total © UCLES 2007 0843/02/O/N/07 6 A B Ajay has 2 dry glasses. He pours a cold drink from the fridge into one g\ lass. He pours a drink from a warm cupboard into the other. A B Glass A now has water droplets on the outside. Glass B stays dry outside. (a) Which glass has had the cold drink poured into it? [1] (b) Where has the water on glass A come from? Tick (
) one box. the cold drink in the glass the warm air outside the glass the cold air inside the glass the warm drink inside the glass [1]

9 Page Total © UCLES 2007 0843/02/O/N/07 [Turn over (c) What is the name of the process that makes Glass A wet on the outside? [1] 7 Mia gives the dog a bath. She uses a towel to dry the dog afterwards. (a) Why is the towel heavier after she has used it? [1] (b) She hangs the towel outside to dry. Name the process that completely dries the towel. [1] (c) What could help the towel to dry more quickly on the line? [1]

10 Page Total © UCLES 2007 0843/02/O/N/07 8 Some children are finding out what happens to the mass of a bottle of fi\ zzy drink after it is left open for 5 days in a warm room. Day 1 They weigh the bottle with its lid on. (a) What equipment are they using to find the mass? [1] (b) What is the mass of the bottle and contents? [1]

11 Page Total © UCLES 2007 0843/02/O/N/07 [Turn over They take the lid off the bottle and leave it in a warm room. After 5 days they find the new mass. They find that the mass has decreased. Day 5 (c) What is the decrease in mass? g [1] (d) Why did they find the mass of the lid as well as the bottle and contents? [1] (e) Look at the pictures of the bottles in Day 1 and Day 5. What else is different after 5 days? [1]

12 Page Total © UCLES 2007 0843/02/O/N/07 9 Melting is the reverse of freezing. Snow is formed when rain melts. Solids turn to liquids when they melt. The children talk about a snowman that they have made. (a) Tick (
) one box in each row to say whether their statements are True or False ? Statement True False Melting is the reverse of freezing. Snow is formed when rain melts. Solids turn to liquids when they melt. [2] (b) The snowman’s eyes are made from pieces of coal. Snow melts when it is heated. Coal burns when it is heated. What types of changes are these? [1]

13 Page Total © UCLES 2007 0843/02/O/N/07 [Turn over 10 X The toy car is made from wood. Pedro wants the car to pull a trailer alo\ ng. He puts one magnet on the car at X. (a) Which material should the trailer be made from so that it sticks to the \ magnet? Tick (
) one box. aluminium iron wood plastic [1] (b) Pedro sticks another magnet on the front of the trailer. Describe two things that could happen. [2]

14 Page Total © UCLES 2007 0843/02/O/N/07 11 The children put a stick into a hole in the ground. It is a sunny day. A shadow forms. (a) What is the light source? [1] (b) Tick (
) one box in each row to say whether each statement is True or False . Statement True False The stick makes a dark shadow because it is opaque. The stick makes a dark shadow because it reflects the light. The stick makes a dark shadow because it blocks the light. The stick makes a dark shadow because it bends the light. [2]

15 Page Total © UCLES 2007 0843/02/O/N/07 [Turn over (c) The children notice the length of the shadow changes during the day. The table shows the lengths of the shadow at different times of day. Use two of the numbers below to complete the table. 160 128 98 Time Length of shadow (cm) 8:00 162 10:00 131 12:00 14:00 16:00 165 [2] (d) How else does the shadow change during the day? [1]

16 Page Total © UCLES 2007 0843/02/O/N/07 12 Luis blows over the top of a bottle. Both Luis and Natasha can hear the \ sound. (a) What happens to the air in th e bottle when it makes the sound? [1] (b) How can Luis make the sound louder? [1] (c) Luis puts some water in the bottle and blows exactly the same as before.\ What will change about the sound? Tick (
) one box. pitch length volume nothing [1]

17 Page Total © UCLES 2007 0843/02/O/N/07 [Turn over (d) Natasha walks into the next room and shuts the door. She can still hear \ the sound. How will the sound she hears be different now? Tick (
) one box. louder quieter higher shorter [1] (e) Give one material the sound must travel through to reach her ears. [1]

18 Page Total © UCLES 2007 0843/02/O/N/07 13 (a) A bulb will only light up if the circuit has…. Tick (
) one box to complete the sentence. a switch. a break in it. a power source. [1] + – Q (b) Which of these materials will light up the bulb when placed in the circu\ it at Q? Tick (
) one box. plastic copper string paper [1]

19 Page Total © UCLES 2007 0843/02/O/N/07 (c) Two different metals, A and B, were used in the circuit. The bulb was brighter using metal A than with metal B. Tick (
) one box to explain why. Metal A makes more current. Metal A is a better conductor. Metal A is a better insulator. Metal A is better shape. [1]

20 Permission to reproduce items where thir d-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 holder s, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opport\ unity. University of Cambridge International Examinations is part of t he 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. 0843/02/O/N/07 BLANK PAGE