CCHY Prelim SC PHY 4NA P1 2022

This document consists of 9 printed pages, INCLUDING the cover page. [Turn over 2022 Preliminary Examination Secondary Four Normal (Academic) CANDIDATE NAME CLASS INDEX NUMBER SCIENCE (PHYSICS) 5105/01 27 July 2022 Paper 1 Multiple Choice Additional Materials: OTAS Paper 1 and 2: 1 hour 15 minutes READ THESE INSTRUCTIONS FIRST Write your name, class and index number in the spaces at the top of this page and on the OTAS provided. Shade your index number on the OTAS clearly. Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. 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 OTAS. 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 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. Setter: Mr Thong Nai Kee NA CHUNG CHENG HIGH SCHOOL (YISHUN)

CCHY Preliminary Examinations 2022 Science Physics 5105 Sec 4 Normal Academic Page 2 of 9 11.1 1 In an experiment, a student has to measure the width and the thickness of a glass slide as precisely as possible by using standard laboratory apparatus. Which row gives the most appropriate instruments for these measurements? 2 Which of the following best describes the distance-time graph below? A an object at rest B an object moving with a constant speed of 2.0 m/s C an object moving with a constant velocity of 2.0 m/s D An object moving with a constant acceleration of 2.0 m/s2 width of glass slide thickness of glass slide A half-metre rule vernier calipers B half-metre rule micrometer screw gauge C vernier calipers vernier calipers D vernier calipers micrometer screw gauge width of 3.14 cm thickness of 8.90 mm time / s distance / m 2 0 1 0

CCHY Preliminary Examinations 2022 Science Physics 5105 Sec 4 Normal Academic Page 3 of 9 3 Which list contains only scalar quantities ? A acceleration, displacement, velocity B distance, force, speed C force, length, time D length, speed, time 4 A car is moving forward with two forces acting on the car as shown. Which statement is true when the car is moving with a constant velocity? A The forward force F is greater than the resistance force R. B The resultant of the forward force F and resistance force R is zero. C There is lesser resistance force F acting on the car. D The car will continue to move with uniform velocity when the resistance force R is removed. 5 A space probe weighing 3000 N on Earth is sent to planet Jupiter. The gravitational strength of Earth and the planet Jupiter are assumed to be 10 N/kg and 30 N/kg respectively. What is the weight of the space probe when it lands on the planet Jupiter? A 900 N B 9000 N C 90 000 N D 900 000 N

CCHY Preliminary Examinations 2022 Science Physics 5105 Sec 4 Normal Academic Page 4 of 9 6 The diagrams below show four similar sets of books placed in vertical bo ok cases. If the books were push ed a little, which book case is most likely to fall forward? 7 A solid triangle made of copper is cut into three pieces P, Q and R. Which pieces have the greatest density ? A all pieces have the same density B pieces of P and R only C piece P only D piece Q only 8 According to the kinetic particle theory, matter is made up of very small particles in a constant random motion. Which row best describes the particles in liquid state? arrangement of particles forces between particles A closely packed in disorderly manner strong B far apart in a disorderly arrangement strong C closely packed in disorderly manner weak D far apart in a disorderly arrangement weak A B D C

CCHY Preliminary Examinations 2022 Science Physics 5105 Sec 4 Normal Academic Page 5 of 9 9 A coin is dropped from a height into a beaker of water as shown below. At which point does the coin have the most kinetic energy? 10 The diagram shows a flight of stairs. What is the work done against gravity by a person weighing 600 N when climbing the stairs? A 120 J B 1800 J C 2400 J D 3000 J coin beaker of water A B C D

CCHY Preliminary Examinations 2022 Science Physics 5105 Sec 4 Normal Academic Page 6 of 9 11 A substance was heated in an enclosed space until it became a gas. It was then allowed to cool down to room temperature. The graph shows the temperature plotted against time as it cools. Which statement about the substance is correct? A At P, the substance is undergoing boiling. B At Q, the substance is only in liquid state. C At R, heat is absorbed by the substance. D At S, the substance is at its freezing point. 12 A heating element is to be positioned in a narrow sealed tube of liquid as shown. At which position should the heating element be placed in order to obtain the best circulation of the liquid throughout the tube? tube Q P time / s temperature / ºC R S liquid

CCHY Preliminary Examinations 2022 Science Physics 5105 Sec 4 Normal Academic Page 7 of 9 13 To protect a polished table from getting a burnt mark, a cork mat may be put on the table underneath a mug containing hot liquid Why is this method effective ? A Cork is a good conductor. B Cork is a good radiator. C Cork is a poor conductor. D Cork is a poor radiator. 14 The waveforms of two different sounds are shown below. How does sound 2 compare to sound 1? A Sound 2 is louder than sound 1. B Sound 2 is softer than sound 1. C Sound 2 has a higher pitch than sound 1. D Sound 2 has a lower pitch than sound 1. sound 1 sound 2 time time

CCHY Preliminary Examinations 2022 Science Physics 5105 Sec 4 Normal Academic Page 8 of 9 15 Which statement is true of electromagnetic waves? A Radio waves are longitudinal waves. B The wavelength of infra-red radiation is longer than ultraviolet radiation. C All electromagnetic waves travel at the same speed in water. D Ultraviolet radiation has a higher frequency than radio waves. 16 The reading on the ammeter of the circuit is 1.0 A. A second ammeter is connected in the circuit. It also reads 1.0 A. At which labelled point is the ammeter connected? 17 Which statement defines the potential difference across a fixed resistor? A The power needed to drive a unit charge across the resistor. B The power needed to drive a unit charge through the cell. C The work done in driving a unit charge across the resistor. D The work done in driving a unit charge through the cell. 18 A person uses a 3 kW electric fire for 2 hours and a 2 kW heater for 4 hours. What is the total cost if the price of electrical energy is 23 cents per unit (kilowatt-hour)? A $2.53 B $3.22 C $13.80 D $18.40

CCHY Preliminary Examinations 2022 Science Physics 5105 Sec 4 Normal Academic Page 9 of 9 19 In each of the circuits below, a short circuit occurs. In which circuit would the fuse blow and make the circuit safe to repair? 20 Many electrical appliances have metal cases. To prevent the case from becoming “live”, with the possibilit