Download [PDF] April 2020 CAIE P1 Questions 1113 Science Cambridge Lower Secondary Checkpoint

File Information

Filename:	[PDF] April 2020 CAIE P1 Questions 1113 Science Cambridge Lower Secondary Checkpoint.pdf
Filesize:	1.88 MB
Uploaded:	03/08/2021 17:08:45
Keywords:	april 2020 caie p1 questions 1113 science cambridge lower secondary checkpoint pdf
Description:	Download file or read online CAIE Cambridge lower secondary checkpoint past exam paper Science 1113/01/A/M/20 April/May 2020 questions paper 1 - Cambridge Assessment International Education.
Downloads:	500

File Preview

Download Urls

Short Page Link

https://www.edufilestorage.com/2Zs

Full Page Link

https://www.edufilestorage.com/2Zs/PDF_April_2020_CAIE_P1_Questions_1113_Science_Cambridge_Lower_Secondary_Checkpoint.pdf

HTML Code

<a href="https://www.edufilestorage.com/2Zs/PDF_April_2020_CAIE_P1_Questions_1113_Science_Cambridge_Lower_Secondary_Checkpoint.pdf" target="_blank" title="Download from eduFileStorage.com"><img src="https://www.edufilestorage.com/cache/plugins/filepreviewer/1498/pdf/150x190_middle_46f4e7862b1eb5bd4935adbbba5d79e8.jpg"/></a>

Forum Code

[url=https://www.edufilestorage.com/2Zs/PDF_April_2020_CAIE_P1_Questions_1113_Science_Cambridge_Lower_Secondary_Checkpoint.pdf][img]https://www.edufilestorage.com/cache/plugins/filepreviewer/1498/pdf/150x190_middle_46f4e7862b1eb5bd4935adbbba5d79e8.jpg[/img][/url]

[PDF] April 2020 CAIE P1 Questions 1113 Science Cambridge Lower Secondary Checkpoint.pdf | Plain Text

This document has 20 pages. Blank pages are indicated. IB20 05_1113_01/3RP © UCLES 2020 [Turn ove r   Cambridge Lower Secondary Checkpoint SCIENCE 1113/01 Paper 1 April 2020 45 minutes You must answer on the question paper. No additional materials are needed. INSTRUCTIONS  Answer all questions.  Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.  Write your name, centre number and candidate number in the boxes at the top of the page.  Write your answer to each question in the space provided.  Do not use an erasable pen or correction fluid.  Do not write on any bar codes.  You should show all your working in the booklet.  You may use a calculator. INFORMATION  The total mark for this paper is 50.  The number of marks for each question or part question is shown in brackets [ ].

2 © UCLES 2020 1113/01/A/M/20 1 The list contains the names of different parts of a cell. cell membrane cell wall chloroplast Complete the table by placing ticks () in the correct boxes. part of a cell where the part of the cell is found only in animal cells only in plant cells in both animal and plant cells cell membrane cell wall chloroplast [2] 2 This question is about the properties of metals. (a) Draw straight lines to match the property of a metal with its correct use linked to that property. sonorous property of a metal strong ductile harddrill bituse bridge across a river electrical wires bell [2]

3 © UCLES 2020 1113/01/A/M/20 [Turn over (b) Metals are used to make electrical wires because they conduct electricity. plastic metal Write down two reasons why plastic is put around electrical wires. 1 2 [2] (c) Read the sentences about the physical properties of metals. Tick () the box next to the correct sentence. All metals have low melting points. Some metals are gases at room temperature. All metals conduct heat. All metals are brittle. [1]

4 © UCLES 2020 1113/01/A/M/20 3 Blessy uses the internet to find out about our Solar System. She finds a very old model of our Solar System. Jupiter Mars Mercury Earth Moon Venus Sun Saturn orbits Scientists thought that the Earth was at the centre. The orbits in the old model show the other objects moving around the Earth. (a) Scientists today know that the Earth is not at the centre of our Solar System. What is at the centre of our Solar System? [1] (b) Write down two other things that are incorrect in the old model. 1 2 [2] (c) Write down one thing that is correct in the old model. [1]

5 © UCLES 2020 1113/01/A/M/20 [Turn over 4 This question is about blood vessels. (a) Draw a straight line from each cross section of a blood vessel to the correct letter showing where the blood vessel is found. A B C cross sections of blood vesselsblood vessels from heart to heartdirection of blood flow [2] (b) Name the types of blood vessel labelled A and C. A C [2]

6 © UCLES 2020 1113/01/A/M/20 5 The picture shows three different elements and their state at room temperature. solid iodineliquid bromine chlorine gas (a) Which two of these elements flow easily at room temperature? [1] (b) What is the chemical symbol for chlorine? [1] (c) Chlorine gas fills the jar. Explain why a gas fills a jar. Tick () the box next to the correct explanation. [1] Forces between the particles push them apart.   The particles are free to move.   The particles can easily be squashed into a small space.   The particles increase in size to fill the space. 

7 © UCLES 2020 1113/01/A/M/20 [Turn over (d) Liquid bromine easily evaporates. Explain what happens to the particles (molecules) when a liquid evaporates. [2]

8 © UCLES 2020 1113/01/A/M/20 6 Mia investigates sound. loudspeakeroscilloscope microphone She makes a sound using a loudspeaker. The sound is detected by the microphone. (a) Describe how the sound travels from the loudspeaker to the microphone. [2]

9 © UCLES 2020 1113/01/A/M/20 [Turn over (b) Mia draws the wave she sees on the oscilloscope. (i) She makes the sound louder. Draw this wave on the oscilloscope. [1] (ii) She makes the sound a higher pitch. Draw this wave on the oscilloscope. [1]

10 © UCLES 2020 1113/01/A/M/20 7 This question is about the life cycle of a plant. (a) These processes take place in the life cycle of a plant. fertilisation pollination seed formation seed germination Put the processes in the order in which they occur in the life cycle of a plant. One has been done for you. seed germination .................... .................... .................... [1] (b) The diagrams A and B show two different types of seed. AB Suggest the method of dispersal for each type of seed. Give a reason for each answer. method of seed dispersal reason A B [2]

11 © UCLES 2020 1113/01/A/M/20 [Turn over 8 Look at the diagram of the structure of a lithium atom. nucleus (a) There are three electrons in a lithium atom. (i) How many protons are there in a lithium atom? [1] (ii) How many neutrons are there in a lithium atom? [1] (b) A sodium atom contains 11 protons. Draw the structure of a sodium atom. [2]

12 © UCLES 2020 1113/01/A/M/20 9 Mike investigates the strength of magnets. magnet paper clip hand Mike  puts the magnet on top of his hand  puts the bottom of his hand onto 24 paper clips  lifts his hand up  counts how many paper clips have been attracted  repeats with different magnets. Here are his results. magnet number of paper clips A 24 B 24 C 7 D 19 E 12

13 © UCLES 2020 1113/01/A/M/20 [Turn over (a) Mike concludes that magnet A and magnet B are both strong. He cannot conclude which of these two magnets is stronger. (i) Explain why he cannot conclude which magnet, A or B, is stronger. [1] (ii) Describe what he could do to find out which magnet, A or B, is stronger. [1] (b) Pierre repeats Mike’s investigation. Here are Pierre’s results. magnet number of paper clips A 18 B 22 C 1 D 13 E 6 Pierre uses the same magnets as Mike. Pierre uses the same paper clips as Mike. The results are different. (i) Describe one difference between the results. [1] (ii) Suggest why the results are different. [1]

14 © UCLES 2020 1113/01/A/M/20 10 Egg white contains a protein. An enzyme digests protein in the stomach. Class 9 investigate how changing the pH affects the time it takes for the enzyme to digest egg white. The graph shows the results of their investigation. 0 1 2 3 4 5 01 234 5 6 7 8 9 10 pH of mixture time to digest egg white in minutes 6 (a) (i) Which pH has the shortest time of digestion? pH [1] (ii) The class want to be certain that they have found the shortest time. Describe two things the class does to be certain. 1 2 [2]

15 © UCLES 2020 1113/01/A/M/20 [Turn over (b) (i) State one safety risk of using liquids with a very low pH. [1] (ii) Describe one way of reducing this safety risk. [1] (c) State one variable the students must control in this investigation. [1]

16 © UCLES 2020 1113/01/A/M/20 11 Jamila and Ahmed investigate displacement reactions. They put drops of different solutions into the dimples of a spotting tile. They then add metals to each solution. The diagram shows their experiment. zinc metal zinc nitrate solution magnesium nitrate solution copper nitrate solution iron nitrate solutioncopper metal spotting tile magnesium metaliron metal dimple Key empty dimple dimple with metal and solution (a) Jamila and Ahmed look to see if a reaction takes place. Suggest what they might see if a reaction takes place. [1]

17 © UCLES 2020 1113/01/A/M/20 [Turn over (b) They record their results in a table. They put a  tick () if there is a reaction  cross (x) if there is no reaction. Here are some of their results. solution metal zinc magnesium copper iron zinc nitrate  x x magnesium nitrate copper nitrate    iron nitrate   x (i) Complete the table to predict the results for magnesium nitrate. [1] (ii) The reactivity series shows the metals in order of reactivity. Which of the four metals is the lowest in the reactivity series? [1]

18 © UCLES 2020 1113/01/A/M/20 12 Complete the light rays in the three diagrams. (a) reflection mirror normal [1] (b) air water refraction [1] (c) light source shadow formation opaque object screen [2] 13 Complete the word equation for aerobic respiration. glucose .................... .................... .................... .................... .................... .................... + + [2]

19 © UCLES 2020 1113/01/A/M/20 BLANK PAGE

20 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. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cambridgeinternational.org after the live examination series. 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. © UCLES 2020 1113/01/A/M/20 BLANK PAGE