Sec 4 Science Physics SA2 2018 Assumption

[Turn Over Name: ………………………………………………….… ( ) Class: …………… ASSUMPTION ENGLISH SCHOOL PRELIMINARY EXAMINATION 2018 SCIENCE (PHYSICS) 5076 / 01 ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL LEVEL: 4 Express / 5 Normal (Academic) DATE: 15 August 2018 CLASSES: Sec 4/1, 4/2 & 5/1 DURATION: 1 hour (Both Physics & Chemistr y) Additional Materials provided: 1 sheet of OAS paper INSTRUCTIONS TO CANDIDATES Do not open this booklet until you are told to do so. Write your NAME, INDEX NUMBER and CLASS at the top of this page and on the OAS paper.Shade your index number on the OAS paper. There are 20 questions in this paper. Answer ALL questions. For each question, there are four possible answers A, B, C and D. Choose the correct answer and record your choice in soft or 2B pencil on the OAS paper provided. DO NOT fold or bend the OAS paper. For Examiner’s use: Paper 1 / 20 Paper 2 / 65 Paper 5 / 15 Total / 100 At the end of the examination, hand in your OAS paper and Question Papers separately. This Question paper consists of 9 printed pages including this page. www.KiasuExamPaper.com 3

2 5076/4E5N/PRELIM/2018 Answer ALL questions on the OAS paper provided. 1 A stone is dropped from the top of a building to the ground. Which is a vector quantity? A gravitational potential energy to bring the stone to the top of the building B kinetic energy of the stone as it reaches the ground C time taken for the stone to reach the ground D velocity of the stone as it reaches the ground 2 The diagram below shows the reading of a micrometer screw gauge. What is the correct reading? A 2.25 mm B 2.75 mm C 5.25 mm D 5.75 mm 3 Which object has the greatest inertia? A a 2 kg mass at rest B a 5 kg mass moving at constant acceleration C a 5 kg mass moving at constant velocity D a 10 kg mass at rest www.KiasuExamPaper.com 4

3 5076/4E5N/PRELIM/2018 [Turn Over 4 The diagram below shows a simple pendulum oscillating between po sitions X and Z. Which sequence should be timed to measure the period of the pendulum? AX Æ YB X Æ Z CX Æ Z ÆÆ YD X Æ Z ÆÆ X 5 The graph shows the distance-time graph of a cyclist who cycled towards the end of the park and back to the starting point. Which statement correctly describes the motion of the cyclist in the stated time interval? A From 0 to 1 min, the cyclist is moving at uniform acceleration. B From 1 to 1.5 min, the cyclist is moving at uniform speed. C From 1.5 to 2.5 min, the cyclist is moving at non-uniform speed. D From 2.5 to 4 min, the cyclist is moving at uniform speed. ZX Y time / min distance / m 0 12 3 4 5 10 15 www.KiasuExamPaper.com 5

4 5076/4E5N/PRELIM/2018 6 A force is applied to an object on a frictionless surface. It p roduces an acceleration of 3.5 m/s². What are possible values for the applied force and for the mass of the object? force / N mass / kg A 2.0 1.5 B 2.0 7.0 C 7.0 0.5 D 7.0 2.0 7 A uniform beam 20 cm long is pivoted at one end. The weight of the beam is 3 N and a 4 N weight hangs 5 cm from the pivot. An upward force U is needed to keep the beam horizontal. What is the value of this force? A 1N B 2.5 N C 4 N D 5 N 5 cm 20 cm U pivot 4N www.KiasuExamPaper.com 6

5 5076/4E5N/PRELIM/2018 [Turn Over 8 In the figure shown below, an object is tilted such that it is at the point of falling over. Where would be the likely position of the centre of gravity of the object? 9 The diagrams below show the cross-sections of different glasses. Which glass is the most stable when filled with water to the brim? A B C D 10 A builder carrying five bricks climbs a ladder. Each brick weigh s 20 N and the builder climbs a vertical distance of 6.0 m in 25 s. What is the average power used to raise the bricks? A 4.8 W B 24 W C 120 W D 15000 W www.KiasuExamPaper.com 7

6 5076/4E5N/PRELIM/2018 11 The following objects all lose heat. Which object loses all of its heat by radiation? A an iron block at 120qC with black surface, in the air B a shiny metal of a spaceship at 25 qC, in space C a wooden block with white surfaces at 60 qC D the heating element of a kettle at 150 qC, in water 12 Which statement about evaporation is true? A Evaporation causes the temperature of a liquid to be higher. B Evaporation occurs throughout the liquid. C Evaporation takes place at any temperature. D Evaporation takes place by releasing heat to the surroundings. 13 An object is placed in front of a plane mirror as shown below. Which diagram shows the correct mirror image of the object? mirror object A B C D www.KiasuExamPaper.com 8

7 5076/4E5N/PRELIM/2018 [Turn Over 14 The diagram shows how displacement varies with time as a wave passes a fixed point. What is the frequenc y of this wave? A 0.25 Hz B 0.50 Hz C 2 Hz D 4 Hz 15 The dipper in a ripple tank vibrates at a frequency of 8 Hz and forms the wave pattern shown in the diagram below. The distance between the tw o crests as shown is 5 cm. What is the speed of the wave? A 1.6 cm/s B 3.2 cm/s C 20 cm/s D 40 cm/s displacement / m time / s 2 – 2 0 2 4 6 8 10 5 cm www.KiasuExamPaper.com 9

8 5076/4E5N/PRELIM/2018 16 Which is an application of microwaves? A used in global positioning system (GPS) to communicate with satellites B used in scanning of luggage C used in treatment of cancer D used in TV-remote controllers 17 Radio waves, infra-red radiatio n and ultra-violet radiation are a l l p a r t o f t h e electromagnetic spectrum. What is the correct order of increasin g wavelength? shortest longest A radio waves infra-red radiat ion ultra-violet radiation B radio waves ultra-violet radi ation infra-red radiation C ultra-violet radiation infra -red radiation radio waves D ultra-violet radiation radio waves infra-red radiation 18 The diagram below shows a displace ment-time graph of a note pro duced by strumming a guitar string. If the same note is produced again but at a louder volume, how w ill the wave chan ge? A The amplitude of the wave would decrease. B The amplitude of the wave would increase. C The peaks of the wave would be closer to one another. D The peaks of the wave would be further from one another. time / s displacement / m www.KiasuExamPaper.com 10

9 5076/4E5N/PRELIM/2018 [Turn Over 19 The current in a hand dryer is 12 A. It is switched on for threeminutes. How much charge flows through the hand dryer? A 0.0667 C B 4 C C 36 C D 2160 C 20 A dry cell of e.m.f. 4.0 V has a wire connected to its terminals. If 10 C of charge passes through the circuit, what is the amount of chemical energy transformed into electrical energy? A 0.4 J B 2.5 J C 14 J D 40 J - END OF PAPER - www.KiasuExamPaper.com 11

[Turn Over Name: ………………………………………………….… ( ) Class: …………… ASSUMPTION ENGLISH SCHOOL PRELIMINARY EXAMINATION 2018 SCIENCE (PHYSICS) 5076 / 02 ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SC