Serangoon Gardens 2022 4N Phy Prelim P1 QP

SERANGOON GARDEN SECONDARY SCHOOL PRELIMINARY EXAMINATION CANDIDATE NAME CLASS INDEX NUMBER SCIENCE(PHYSICS) 5105/01 5 August 2022 Secondary 4 Normal(Academic) Papers 1 and 2: 1 hour 15 minutes 1100 - 1215 Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class register number and class on the Answer Sheet in the spaces provided unless this has been done for you. There are twenty questions on this paper. Answer all questions. For each question, there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Answers to Paper 1 and Paper 2 must be handed in separately. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. You are advised to spend no more than 30 minutes on Paper 1. You may proceed to answer Paper 2 as soon as you have completed Paper 1. Any rough working should be done in this paper. The use of an approved scientific calculator is expected, where appropriate. For Examiner’s Use 20 This question paper consists of 10 printed pages and 2 blank pages.

2 SGS/2022/Prelim/4NA/Science(Physics)/P1 BLANK PAGE

3 SGS/2022/Prelim/4NA/Science(Physics)/P1 [Turn Over 1 The force of gravity on a body is a vector quantity. Which describes a vector quantity? A It acts in a vertical direction. B It has direction but no size. C It has a direction and a size. D It is a force of attraction. 2 A pair of Vernier callipers is used to measure the diameter of three identical ball bearings as shown. What is the diameter of one ball bearing? A 0.39 cm B 0.52 cm C 1.16 cm D 1.56 cm

4 SGS/2022/Prelim/4NA/Science(Physics)/P1 3 Which distance-time graph represents an object moving at constant speed? 4 A car of mass 1200 kg is travelling along a horizontal road. What is the acceleration of the car? A 0.40 m/s2 B 0.83 m/s2 C 2.5 m/s2 D 3.3 m/s2

5 SGS/2022/Prelim/4NA/Science(Physics)/P1 [Turn Over 5 The stability of a bus is tested by tilting it on a ramp. The diagram shows a bus that is just about to fall over. Where is its centre of gravity? 6 Which row describes the forces between the molecules and the motion of the molecules in a gas? forces between molecules motion of molecules A strong move freely B strong vibrate only C weak move freely D weak vibrate only 7 Air is contained in a metal cylinder by a piston which is free to move. When the metal cylinder is heated, the piston moves towards the right. What happens to the air molecules when the metal cylinder is heated? A The number of air molecules increases. B The air molecules get bigger. C The air molecules move about faster. D The air molecules start moving in the same direction.

6 SGS/2022/Prelim/4NA/Science(Physics)/P1 8 Some ice is slowly heated and its temperature is measured. A graph is plotted to show how the temperature of the ice changes time. Which row describes what happens to the thermal energy and to the temperature in section X? thermal energy temperature of ice A gained by ice rises B gained by ice stays the same C not gained by ice rises D not gained by ice stays the same 9 The melting point of a substance is –78 °C and its boiling point is 23 °C. Which row gives the correct state of matter of the substance at the given temperatures? state at 0 °C state at 100 °C A solid liquid B solid gas C liquid solid D liquid gas 10 A liquid at room temperature is put on a metal surface which is also at room temperature. A student blows gently across the liquid and the temperature of the liquid decreases. What causes the liquid to become cooler? A Bubbles of water vapour form in the liquid and go into the air. B The moving air reduces the kinetic energy of all the particles in the liquid. C Thermal energy flows from the liquid into the metal. D The more energetic particles in the liquid escape into the air.

7 SGS/2022/Prelim/4NA/Science(Physics)/P1 [Turn Over 11 A wave has the appearance shown. How do the properties of the wave change as the distance from the origin increases? amplitude wavelength A decreases increases B decreases stays the same C increases increases D increases stays the same 12 A series of circular wavefronts are created in a ripple tank as shown. The distance from X to Y is 1.6 cm. What is the wavelength of the waves created? A 0.53 cm B 0.8 cm C 1.6 cm D 3.2 cm

8 SGS/2022/Prelim/4NA/Science(Physics)/P1 13 Which diagram shows the order of the waves in the electromagnetic spectrum? A B C D 14 Which row shows the properties of radio waves? type of wave comparison of speed in a vacuum A longitudinal travels at the same speed as light B longitudinal travels slower than light C transverse travels at the same speed as light D transverse travels slower than light

9 SGS/2022/Prelim/4NA/Science(Physics)/P1 [Turn Over 15 A student wants to determine the speed of the sound. He stands 400 m away from a wall, and plays a sound using a loudspeaker. He hears the echo 2.5 s later. What is the speed of sound? A 160 m/s B 320 m/s C 1000 m/s D 2000 m/s 16 An electric circuit contains a resistor in series with a battery. What are the directions of the conventional current flow and electron flow through the resistor? conventional current electron flow A X to Y X to Y B X to Y Y to X C Y to X X to Y D Y to X Y to X

10 SGS/2022/Prelim/4NA/Science(Physics)/P1 17 The diagram shows a 6.0 V battery connected in series with two identical resistors and a light bulb. The potential difference across one of the identical resistors is found to be 1.0 V. What is the potential difference across the light bulb? A 1.0 V B 2.0 V C 4.0 V D 6.0 V 18 A cell is connected to a parallel combination of a 2.0 Ω resistor and a 4.0 Ω resistor. The current in the 4.0 Ω resistor is 1.0 A. What is the current in the 2.0 Ω resistor? A 0.5 A B 1.0 A C 1.5 A D 2.0 A