2022 Sec 3 Science Physics EOY Admiralty Secondary with Answer

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BP-3 CLASS ADMIRALTY SECONDARY SCHOOL { nEND-OF.YEAR EXAMINATION 2022 SUBJECT CODE/PAPER LEVEUSTREAM DATE TIME DURATION lnstructions to candidates: Write your name, index number and class on the cover page. Write in dark blue or black pen. Do not use staples, paper clips, highlightes, glue or conection f uid Sec'tion A: Multiple Choice Questions [20 marks] Answer all questions in the OTAS provided. Section B: Short Answer Questions [30 marks] Answer all questions. Write your arswers in the spaces provided in the question paper. Section C: Structured Questions [20 marks] Answer any two out of three questions. Write your answers in the spaces provided in the question paper. Submit the queslion paper and OTAS separately Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. The number of marks is given in brackeb [ ] at the end of each question or part question. For Examineds Use t20 Section B /30 Section C 120 Total t70 DO NOT TURN OVER THIS PAPER UNTIL YOU ARE TOLD TO DO SO. Science (Phy$cs) 5076 Secondary 3 Express 12 o,c*2022 0800h - 0930h I hour 30 minutes This question paper consists of 20 printed pages including this cover page. ParlnerlnLearning NAME: NO: Section A

BP-4 2 2 Section A Answer all questions. 1 Which quanlity is not a base quantity? A force B length C mass D time The diagram shorr\rs part of a vemier scale. 89 cm What is the reading? A 8.07 cm B 8.17 cm C 8.70 cm D 8.77 cm 3 ln the diagram below, a micrometer screw gauge is used to measure the thickness of a metal plate. J) 30 25 0 12 What is the thickness of the metal plate? A 2.29 mm B 2.31 mm 4 Which formula defines velocity? A change in displacement time taken change in distance time taken C 2.79 mm D 2.81 mm B change in speed time taken D change in velocity time taken c 0 5 10 PartnerlnLeaming 2

BP-5 5 3 A parachutist jumps from a helicopter. Two forces act on the parachutist as shown air resistance weight When the air resistance is equal to his weight, which statement is conect? A The parachutist is falling at constant speed. B The parachutist is falling with decreasing speed C The parachutist is falling with increasing speed. D The parachutist is stationary in the air. finger pinhead 6 A pin is squeezed between finger and thumb as shown in the figure below ptn thumb Which statement is correct? A The force of the pin is larger on the finger than on the thumb. B The force of the pin is larger on the thumb than on the finger. C The pressure of the pin is larger on the finger than on the thumb D The pressure of the pin is larger on the thumb than on the finger ParlnerlnLeaming 3 a

BP-6 7 4 A block 2.5 m long, 1.0 m wide and 1.5 m high resB on the ground as shown. 1.0 m B the rectangle D all have the same density 1.5 m 2.5 m Given that the block has a weight of 120 N, what is the largest possible pressure the block can exert on the ground? A 32 Pa B 48 Pa C 80 Pa D 120 Pa 8 Three ob.iects are cut from the same sheet of copper. They are of different shapes. disc s q uare rectangle Which object has the greatest density? A the disc C the square 9 The table below shows the results of an experiment in which a sample of solid is placed in three liquids of different densities, X, Y and Z. liquid observation x Y z 700 1000 13600 sinks floats floats Which of the following statements about the density of the solid is conect? A lt is less than 700 kg/m3. B lt is between 700 kg/m3 and 1 000 kg/m3 C lt is 1 000 kg/m3. D lt is more than 13 600 kg/m3. ParlnerlnLearning 4 I I density of liquid in kg/m3

BP-7 5 '10 Four glasses are filled to their brims with the same liquid. Which glass is the most stable? 11 A A baby's toy balances on the floor as shown. Whicir point is most likely to be the position of the centre of gravity of the by? floor 12 A person in a factory has to lift a box onto a shelf. high shelf box low shelf Which action involves the person doing the least amount of work? A lifting the box quickly to the high shelf B lifting the box slowly to the high shelf C lifting the box to the low shelf instead of to the high shelf D lifting the box to the low shelf first then lifting it to the high shdf DcB D a Ba Aa a PartnerlnLeaming 5 \=_'''l I () )(z____-\ ]L I

BP-8 6 13 An Olympic weight-lifter lifb a weight of 2120 N through a distance of 2 m in 9 s What is the power exerted by the weightlifter? A 236W B 471 W c 4240 W D 138160 W 14 Which statement describes gravitational field strength correcUy? A lt is a region where a mass experiences a gravitational force. B lt is a region where a mass experiences the acceleration due to gravity. C lt is the gravitational force of 10 N acting on the body. D lt is the amount of gravitational force acting on a unil mass. 15 A metal door knob feels cold to touch. Which statement explains the effect? A The metal krpb conducts heat away from the hand quickly. B Metal knob is a good absorber of infrared radiation. G Metal knob lGes heat to the hand. D The temperature of the metal knob is lower than the temperature of the surroundings. 16 A particular type of building board is shown below. aluminium foil compressed expanded polystyrenepaper boards Which row explains why such boards provide good heat insulation? expanded polystyrene is A B c D a good conductor a good conductor a good reflector a poor reflector a good reflector a poor reflector a poor conductor a poor conductor PartnerlnLeaming 6 aluminium foil I aluminium foil is

BP-9 7 17 A ball is floating on the surface of the water when a wave moves from left to right. *----' What diagram best describes the motion ofthe ball as the wave passes by? ABCD 18 The diagram below shows a wave produced by a source oscillating at a constant frequency. Two complete waves are generated in 10.0 s. 10.0 s Which row has the conect amditude and period? amplitude / cm period / s A B c D 1 1 2 2 2.5 5.0 5.0 10.0 PartnerlnLeaming 7 ball --(}+ ___<*>_

BP-IO 19 8 A man beats a drum twice. On the second beat, the man beats the drum with a greater force than on the frst beat. Which statement describes the sound wave of the second beat compared to the sound wave of the first beat? The amplitude of sound wave decreases. The amplitude of sound wave increases. The frequency of sound wave decreases. The frequency of sound wave increases. 20 A ship sends a short pulse of high frequenry sound down towards the sea bed and detects the reflected sound 0.24 s later. The spBed of sound in water is 1500 m/s. What is the depth of the sea? A 180 m B 360 m C 6250 m D 12500m A B c D PartnerlnLeaming 8

BP-11 1 9 Section B Answer all questions. Complete the table by filling in the blank spaces with the conect unit, symbol and multiple. u nit symbol multiple kilogram kg 1 103 microgram tis ng 1 x 10-s milligram 1 x 'l 0-3 An astronaut boards a rocket and flies to the Moon. On the Moon, he decides to take a sample of Moon rock back to Earth. The Moon rock weighs 20 N on the Moon. (a) S.l. unit for mass is kilograms whereas S.l- unit for weight is Newton. State one other difference between the mass and weight of an o$ect. t3l 2 .......t11 (b) (i) Take gravitational fleld strength on the Earth and Moon to be '10 N/kg and 1.6 N/kg respectively. Calculate the mass of the Moon rock on the Moon. mass of Moon rock = .... ks [21 (ii) Hence, or otherwise, calculate the weight of the Moon rock on Earth weight on Earth = PartnerlnLearning I N 11] I I