Admiralty-Secondary-Prelim-2021-Science-Physics-With-Answers

NAIME: NO: CLASS: ADMIRALry SECONDARY SCHOOL A n PRELIMINARY EXAMINATION 2021 SUBJECT CODE/PAPER LEVEUSTREAM DATE TIME DURATION Science (Physics, Chemistry) 5076/1 Secondary 4 Express / Secondary 5 Normal (Academic) 30 August 2021 1120h - 1220h t hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and register number on the Optical Answer Sheet provided unless this has been done for you. There are forty 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 Optical Answer Sheet. Fill in the Optical Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer Any rough working should be done in this question paper. A copy of the Data Sheet is printed on page 17. A copy of the Periodic Table is printed on page 18. The use of an approved scientific calculator is expected, where appropriate. 40 DO NOT TURN OVER THIS PAPER UNTIL YOU ARE TOLD TO OO SO. This question paper consists of l8 printed pages including this cover page. PartnerlnLeaming 3

2 1 A plumber measures, as accurately as possible, the length and internal diameter of a straight copper pipe. The length is approximately 80 cm and the internal diameter is approximately 2 cm. What is the best combination of instruments for the plumber to use? internal diameter length A B c D rule rule vernier calipers vernier calipers rule tape rule tape 2 The graph shows how the distance of an object changes with time. distance 0 2 4 6 I 10 12 time/s Between which two times is the object moving with a non-zero constant speed? A between0sand2s B between2sand4s G between4sandSs D between 8 s and 12 s PartnerlnLeaming 4 0 I

3 3 The same downward force is applied to four objects resting on a horizontal surface Which exerts the greatest pressure on the surface? draw,ng pin table fork stiletto heel A 4 The weight of a stone is found using a newton meter, and its mass is found using a pan balance. stone slone newton meter pan balance The experiment is carried out on the Earth and on the Moon. For each meter, is its reading the same or different on the Earth and on the Moon? reading on newton meter reading on pan balance A B c D different different same same different same different same PartnerlnLeaming 5 cB I car wheel D &A I

4 5 The diagram shows a lorry. What is the best position for its centre of mass and why is it placed there? 6 A machine does 6.0 kJ of useful work in 20 minutes. How much useful power does it produce? B 5.OW c 120w D 3OOW 7 What is the property common to both solids and liquids? A They always fill a container. B They can flow. C They have a fixed shape. D They have a fixed volume. PartnerlnLeaming 6 L I I ( best position reason for the position A B c D as high as possible as high as possible as low as possible as low as possible the lorry can accelerate more rapidly the lorry is more stable the lorry can accelerate more rapidly the lorry is more stable A 0.30 w

5 I The diagram shows a single ray of light being directed at a plane mirror 400 What are the angles of incidence and reflection? Angle of incidence Angle of reflection A B c D 400 400 500 500 400 500 400 500 9 Warm water in a bowl evaporates. Which row shows where the evaporation occurs and what effect the evaporation has on the temperature of the remaining water? where evaporation occurs effect on water temperature A B c D only on the surface only on the surface throughout the water throughout the water decreases unchanged decreases unchanged PartnerlnLeaming 7 I I

ob ject 2F Which of the following is the correct application for the above set-up? A magnifying glass B photocopier C projector D telescope 1'l The diagram represents a wave" 6.0 cm What is the wavelength of the wave? A 3.0 cm B 4.0 cm C 6.0 cm D 8.0 cm 12 A radio station transmits signals at a frequency of 9.1 x 107 Hz. What is the wavelength of the radio waves? B 0.33 m C 3.0m PartnerlnLeaming 8 F I \ I \ I \ distance I \ I A 0.30 m D 3.3m 6 '10 The diagram below shows a selup using a thin converging lens. F is the focal point of the lens. 8.0cm m I[T-[ \1

7 '13 An electronic circuit in a fire alarm makes a loudspeaker vibrate alternately at two different frequencies. Which pair of frequencies is suitable for use in the alarm to alert people to the danger of fire? A 1 .SHz and 15Hz B l5Hzand 150000H2 C l50Hz and 15 000H2 D 150000H2 and '15000000H2 14 The metal case of an electric heater is earthed. The plug to the heater contains a 5 A fuse. There is a current of 4 A when the heater works normally. The cable to the heater becomes so worn out that the live wire makes electrical contact with the case. What can possibly happen? A The current flows to earth and the fuse is not affected B The fuse melts and switches off the circuit. C The metal case becomes live and dangerous. D The metal case becomes very hot. l5 A voltmeter is connected across a resistor in an electrical circuit. What does the reading on the voltmeter measure? A the work done in driving 1A of current through the resistor B the work done in driving 1C of charge through the resistor C the work done in driving 1J of energy through the resistor D the work done in driving 1W of power through the resistor PartnerlnLeaming I I

I '16 The diagram shows a circuit with four identical bulbs P, Q, R and S. P R Which statement about the brightness of the bulbs is correct? A P is the same brightness as Q. B P is the same brightness as S. C Q is brighter than S. D R is brighter than P. 17 A 240V mains supply causes a current of 4.00 A in a heater. How much energy is transfened in the heater in 5 minutes? A 192 J B 4800 J c 18000J D 288 000 J 18 Why is the electricity supply to a house fitted with a fuse? A to increase the current in the circuil B to increase the resistance of the circuit C to maintain a constant current in the circuit D to prevent overheating of the cables in the circuit 19 A person uses a 3kW electric fire for 2 hours and a 2kW heater for 4 hours. What is the total cost if the price of electrical energy is 5.0 cents per unit? A 70 cents B 60 cents C 40 cents D 30 cents PartnerlnLeaming 10

20 A permanent magnet can be demagnetised by using a solenoid and switching the current on then off. Which diagram shows the most effective method of producing demagnetisation? I BA Dc magnet left in p ace magnet left in piace magnet withdrawn before switohing off magnet wjthdrawn before switching off N S N S PartnerlnLeaming 11 t t-lllfTir; t-l]llrrF

10 21 The diagrams show two methods of collecting gases. m6s rlng cylinder gas lat walgr gas mefiod I tnethod 2 Which row gives the property of a gas that can be collected by both methods? property 1 property 2 A B c D insoluble in water insoluble in water soluble in water soluble in water denser than air less dense than air denser than air less dense than air 22 A solid was thought to be coppe(Il) carbonate Which of the following is the best way to test the purity of this solid? A Measure its melting point. B Measure the pH of its solution. C Add dilute hydrochloric acid and test for carbon dioxide gas. D Conduct thermal decomposition and test for carbon dioxide gas. 23 Which of the following consists of mixture(s) and element(s)? A coppe(Il) sulfate, francium, lithium B seawater, stainless steel, nitrogen C calcium oxide, orange juice, mercury D sodium chloride, nitric oxide, zinc carbonate PartnerlnLeaming 12 gas I I