Peirce 4NA Sci Phy Prelim 2022 P1 and P2 with ANS

This paper consists of 8 printed pages and 0 blank page. Setter: Mr Clement Lee Class Register No. Candidate Name PEIRCE SECONDARY SCHOOL PRELIMINARY EXAMINATION SECONDARY 4 NORMAL (ACADEMIC) SCIENCE (PHYSICS) 5105/01 Paper 1 Multiple Choice 29 July 2022 Papers 1 and 2: 1 hour 15 minutes Additional Materials: Multiple Choice Answer Sheet INSTRUCTIONS TO CANDIDATES Write your name, class and register number in the spaces provided at the top of this page. Write in dark blue or black pen. There are twenty questions in 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 Multiple Choice Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. You are advised to spend no longer 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 booklet. The use of an approved scientific calculator is expected, where appropriate. Answers to Paper 1 and Paper 2 must be handed in separately.

2 Paper 1: [20 marks] Answer all the questions in the OTAS provided. 1 Which statement about scalar and vector quantities is correct? A Vector quantities have direction only. B Scalar quantities have direction only. C Vector quantities have magnitude, unit and direction. D Scalar quantities have magnitude, unit and direction. 2 A student performed a pendulum experiment and he obtained a time of 5.06 s for 10 oscillations. What is the period of the pendulum? A 0.506 s B 5.06 s C 15.06 s D 50.60 s 3 The following are distance-time graphs. Which graph shows an object travelling at decreasing speed? 4 A body is accelerating at 5 m / s2. What does it mean? A The distance increases by 5 m every second. B The velocity of a body increases by 5 m / s every second. C The body increases its velocity and reaches constant velocity in 5 s. D The velocity remains constant at 5 m / s. A B B D distance / m distance / m distance / m distance / m time / s time / s time / s time / s 0 0 0 0

3 5 A car accelerates along a straight road, moves at constant speed before finally decelerates and comes to a stop. When are the forces acting on the car balanced? A when it comes to a stop B when it is accelerating and when it has constant speed C when it has a constant speed and when it is decelerating D when it has a constant speed and when it comes to a stop 6 A small piece of meteorite is transported from outer space back to Earth. Which changes take place to the meteorite? change in mass change in weight A no increase B no decrease C yes increase D yes decrease 7 A load is to be moved using a wheelbarrow. The total weight of the load and the wheelbarrow is 800 N. What is the size of the force F needed just to lift the loaded wheelbarrow? A 333 N B 467 N C 571 N D 1120 N 8 What is the formula for gravitational potential energy, Ep, when an object has a weight w and is at a height h above the ground? A Ep = w x h B Ep = w x 10 C Ep = w x 10 x h D Ep = w ÷ 10 x h total weight load pivot F

4 9 A 300 N force is applied to a box in the direction XY in order to move it up a ramp as shown below. How much work is done when the box is moved from X to Y? A 900 J B 1200 J C 1500 J D 3600 J 10 Under certain conditions, a solid can turn directly into a gas. Which row shows the correct change in the movement of the molecules? A The movement of the molecules changes from moving randomly at high speed to sliding against each other. B The movement of the molecules changes from sliding against each other to moving randomly at high speed. C The movement of the molecules changes from moving randomly at high speed to vibrating about fixed positions. D The movement of the moelcules changes from vibrating about fixed positions to moving randomly at high speed. 11 A teacher has a large beaker of water in which he wants to set up a convection current. Which arrangement will set up a convection current? A heating at Y B heating at Z C cooling at Y D cooling at X X Z 5 m 4 m 3 m Y water

5 12 When a liquid is cooled at its freezing point, _______________ . A its temperature decreases gradually B the size of the liquid molecules decreases C the total internal kinetic energy of the liquid molecules decreases D the total internal potential energy of the liquid molecule decreases 13 The diagram shows a dipper producing ripples in a ripple tank. What does the ripples represent and which wave property describes the number of waves passing point X per second? what does the ripple represent wave property A wavelength period B wavelength frequency C wavefront period D wavefront frequency 14 Which option correctly lists three components of the electromagnetic spectrum in order of decreasing frequency? A X-rays, microwaves, radio waves B visible light, radio waves, X-rays C X-rays, microwaves, visible light D radio waves, visible light, X-rays 15 A loud sound is made in front of a tall building. An echo is heard 4 s after the sound is produced. If the speed of sound in air is 320 m / s, how far away is the building? A 80 m B 160 m C 640 m D 1280 m dipper direction of waves ripples

6 16 The diagram shows a displacement-time graph produced by a sound wave of amplitude 2 units. Which diagram shows a higher pitched sound being played more loudly? displacement displacement displacement displacement displacement time time time time time A B C D

7 17 Which diagram shows the direction of conventional current and electron flow in a circuit? 18 A conductor carries a current of 6.0 A. What is the time taken for 180 C of charge to flow through it? A 0.0333 min B 0.0333 s C 30.0 min D 30.0 s Use the diagram below to answer Questions 19 and 20. 19 When switches S1 & S2 are closed, what is the effective resistance of the composite circuit? A 10.5 Ω B 6.0 Ω C 1.5 Ω D 0.67 Ω D C B A electron flow conventional current conventional current electron flow conventional current electron flow conventional current electron flow X Y 3 Ω 3 Ω 4.5 Ω S1 S2 S3

8 20 Which switch positions would obtain a resistance of 3  between X and Y? S1 S2 S3 A closed open closed B closed closed open C open closed open D open open open End of Paper 1