2024 Prelim ACSBR P1 P2 QP

Anglo-Chinese School (Barker Road) PRELIMINARY EXAMINATION 2024 SECONDARY FOUR EXPRESS PHYSICS 6091/01 PAPER 1 TIME: 1 HOUR INSTRUCTIONS TO CANDIDATES: Write your name and index number on the OMR Answer Sheet. There are forty questions in this section. 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 OMR sheet. The OMR Sheet is to be submitted separately. INFORMATION FOR CANDIDATES: 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 booklet. This question paper consists of 17 printed pages

Anglo-Chinese School (Barker Road) Preliminary Examination 2024 2 Secondary 4 Physics 6091/01 1 Which of the following list of SI units contains base units only? A ampere, kilogram, hour, volt B ampere, kilogram, kilometre, second C kelvin, metre, mole, second D kelvin, metre, second, volt 2 Nano-technology is about manipulating substances at the nanometre scale. Within 1 nanometre space, 10 hydrogen atoms can be placed side by side. What is the approximate diameter of one hydrogen atom? A 10-4 cm B 10-4 dm C 10-4 µm D 10-4 mm 3 The diagram shows how the displacement of a car varies with time. What is the average speed of the car? A 0.75 m/s B 1.25 m/s C 1.75 m/s D 2.0 m/s displacement / m time / s 10.0 6.0 5.0 8.0

Anglo-Chinese School (Barker Road) Preliminary Examination 2024 3 Secondary 4 Physics 6091/01 4 The diagram shows how the velocity of a body varies with time. What is the displacement of the body at the end of 5 s? A 4.0 m B 9.0 m C 11.0 m D 13.0 m 5 The figure below shows a person sitting on a box that rests on the ground. Which of the following action-reaction pairs is correct? A The weight of the box and the normal force from the ground on the box. B The weight of the man and the normal force from the box supporting the man. C The weight of the man and the contact force on the box by the man. D The weight of the man and the force of man on Earth. 6 A hammer hits a nail on a piece of wood with a speed of 6 m/s. If it drives the nail 0.1 m into the wood, what is the average deceleration of the hammer? A 18 m/s2 B 60 m/s2 C 120 m/s2 D 180 m/s2 velocity / m/s time / s person box ground

Anglo-Chinese School (Barker Road) Preliminary Examination 2024 4 Secondary 4 Physics 6091/01 7 Four identical bottles are filled with different amounts of water. Which bottle has the lowest centre of gravity? 8 An Eskimo stands on snow wearing snow -shoes. The mass of the Eskimo is 40 kg and the snow-shoes have a total area of 0.50 m2 in contact with the snow. The gravitational field strength g is 10 N/kg. What pressure does the Eskimo exert on the snow? A 20 N/m2 B 80 N/m2 C 200 N/m2 D 800 N/m2 9 A block of wood is pulled along a horizontal bench at a constant speed of 6.0 m/s by a force of 8.0 N. How much work is done against the frictional force in 5 s? A 40 J B 48 J C 240 J D 480 J

Anglo-Chinese School (Barker Road) Preliminary Examination 2024 5 Secondary 4 Physics 6091/01 10 In a power station, fossil fuel is used to boil the water into steam. The steam is then used to rotate turbines which power generators. Which of the following represents the main energy conversion taking place? A chemical potential energy→ thermal energy→ electrical energy→ kinetic energy B chemical potential energy→ thermal energy→ kinetic energy → electrical energy C kinetic energy→ thermal energy→ chemical potential energy→ electrical energy D kinetic energy→ thermal energy→ electrical energy→ chemical potential energy 11 When fine pollen grains suspended in water are viewed under a microscope, they are seen to be making small erratic movements. What is the explanation for this observation? A There are convection currents in the water. B The pollen grains are being bombarded by other suspended particles. C The pollen grains are being bombarded by water molecules. D The pollen grains are colliding with one another. 12 Air is pumped into a bicycle tyre. The volume and temperature of the tyre remains constant. Why does the pressure increase? A Air molecules are closer together. B Air molecules are hitting the walls of the tyre with a higher frequency. C Air molecules have a smaller intermolecular forces of attraction. D Air molecules have higher kinetic energy.

Anglo-Chinese School (Barker Road) Preliminary Examination 2024 6 Secondary 4 Physics 6091/01 13 Which statements best describe thermal energy transfer between two objects? (i) Energy transferred from a body with higher amount of thermal energy to one with lower amount of thermal energy. (ii) Energy transferred from a body with higher temperature to one with lower temperature. (iii) There is no net transfer of energy when the temperatures of the two objects are the same. A (i) and (ii) only B (i) and (iii) only C (ii) and (iii) only D All of the above 14 The diagram shows a metal saucepan filled with water and placed on a hot plate. After some time, the air at point x also becomes hot. What are the main ways by which heat travels through the materials? through base of saucepan through water through air to point x A conduction convection convection B conduction convection radiation C radiation convection conduction D radiation conduction radiation hot plate metal saucepan water

Anglo-Chinese School (Barker Road) Preliminary Examination 2024 7 Secondary 4 Physics 6091/01 15 A block of iron and a volume of water both with a mass of 2.0 kg are heated to the same temperature and then allowed to cool in a room. Why does the iron cool more quickly than the water? A Iron has a higher specific heat capacity than water. B Iron has a higher specific latent heat of fusion than water. C Iron has a lower specific heat capacity than water. D Iron has a lower specific latent heat of fusion than water. 16 Which statement about boiling and evaporation is correct? A Boiling only occurs at the surface of a liquid. B Bubbles are not formed in the liquid during boiling. C Evaporation is not affected by the surface area of the liquid. D Evaporation occurs at any temperature. 17 Two liquids, X and Y are cooled in air. Their cooling curves are shown below. If X and Y have the same mass, which of the following statements is/are correct? I X has a higher melting point than Y. II X has a larger specific latent heat of fusion than Y. III X has a greater specific heat capacity of air than Y. A I only B II only C I and II only D I, II and III X Y temperature / C time / s o

Anglo-Chinese School (Barker Road) Preliminary Examination 2024 8 Secondary 4 Physics 6091/01 18 The sound wave produced by a violin in an auditorium is shown in the diagram below. What is the frequency of the sound made by the violin if the speed of sound in the auditorium is 340 m/s? A 176 Hz B 352 Hz C 528 Hz D 881 Hz 19 Which of the following correctly describes the changes in the loudness and pitch of the sound heard by an observer when the amplitude and frequency of the sound wave produced by a speaker are increased? loudness pitch A increases increases B increases decreases C decreases increases D decreases decreases 20 A man stands in front of a large wall. He claps two pieces of wood together regularly at 0.5 s interval such that the echo of the first clap coincides with the second clap. The speed of sound