2025 SGSS Prelim paper

St. Gabriel’s Secondary School 2025 ‘O’ Preliminary Examination Subject : Science(Physics/Chemistry) Paper : 5086/01 Level/Stream : Sec 4E/5N/4NA(OOS) Duration : 1 hour Date : 29 August 2025 Additional material(s): Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your class, register number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fluid. There are forty questions in this question 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 Answer Sheet. 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. A copy of the Data Sheet is printed on page 18. A copy of the Periodic Table is printed on page 19. The use of an approved scientific calculator is expected, where appropriate. This question paper consists of 19 printed pages. Name: …………………………………………( ) Class: Sec ………………..

2 SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 1 Which derived SI unit is represented correctly with its basic SI units? derived SI unit basic SI units A Hz 1 s B J kg m2 s3 C Ω kg m2 s2 A2 D Pa N m 2 The graph shows how the distance travelled by a vehicle changes with time. Which row describes the speed of the vehicle in each section of the graph? P to Q Q to R R to S A constant zero constant B constant zero decreasing C increasing constant decreasing D increasing constant increasing

3 SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 3 A speed-time graph of an object moving in a straight line is shown. What is the average speed of this object for 50 s? A 10 m/s B 15 m/s C 16 m/s D 20 m/s 4 Which graph shows the acceleration of free-fall for an object at different heights above the surface of the Earth? 5 A car accelerates along a straight road and then moves at a constant speed. Finally, the car slows down to rest. When are the forces on the car balanced? A when it accelerates and when it has constant speed B when it accelerates and when it slows down C when it has constant speed and when it is at rest D when it slows down and when it is at rest acceleration m/s2 height / m

SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 4 6 The extension –load graph for a spring is shown. The unstretched length of the spring is 17.0 cm. When an object is suspended from the spring, the length of the spring is 19.2 cm. What is the weight of the object? A 1.4 N B 1.6 N C 2.6 N D 3.0 N 7 A block of weight W is at rest on a table. Force F and force W are an action-reaction pair of forces. Which describes force F? A The downward normal force that the table exerts on the block. B The force that the block exerts on the Earth towards the block. C The gravitational force that the Earth exerts on the table. D The upward contact force that the table exerts on the block.

5 SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 8 A hole is made in a square tile of uniform thickness. The diagram shows the tile hanging loosely on a nail. Where is the centre of gravity of the tile? 9 A girl of weight 500 N runs up a flight of stairs in 10 s. The flight of stairs has a horizontal distance of 3.0 m, a vertical distance of 4.0 m, and a diagonal distance of 5.0 m. What is the average useful power developed by the girl? A 150 W B 200 W C 250 W D 600 W 10 A parachutist opens his parachute and falls to Earth at constant speed. What is the main energy transfer taking place as he falls? A kinetic store to gravitational potential store of energy B kinetic store to internal store of energy C gravitational potential store to kinetic store of energy D gravitational potential store to internal store of energy 4.0 m 5.0 m 3.0 m flight of stairs

SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 6 11 According to the kinetic theory, matter is made up of very small particles in a constant state of motion. Which row best describes the particle behaviour in the liquid state? forces between particles motion of particles A strong move randomly at high speed B strong slide over each other C strong vibrate around a fixed position D weak move randomly at high speed 12 Which statement describes what happens when iodine solidifies? A There is a transfer of energy and a change in temperature. B There is a transfer of energy but no change in temperature. C There is no transfer of energy and no change in temperature. D There is no transfer of energy but there is a change in temperature. 13 A beaker contains water at room temperature. Which action sets up a convection current in the water? A cooling the water at X B cooling the water at Y C stirring the water at X D stirring the water at Y 14 Which waves produce compressions as they travel through the air? A light waves B microwaves C radio waves D ultrasound waves

7 SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 15 A ray of light in air is incident on the surface of water. Some light is reflected and some light is refracted. Which line represents the reflected ray? 16 An object of height 16.0 cm is placed 36.0 cm in front of a thin converging lens. Some light rays are shown travelling from the top of the object to form the top of the image on the opposite side of the lens. Each principal focus is labelled F. What are the three characteristics of this image? A real, upright, enlarged B real, inverted, enlarged C virtual, upright, diminished D virtual, inverted, diminished

SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025 8 17 The circuits contain a number of identical cells and a number of identical resistors. In which circuit is the current in the cells the highest? 18 A wire of length 2.0 m and cross-sectional area 0.50 x 10-6 m2 has a resistance of 1.2 Ω. Another wire of the same material has a length of 0.50 m and a cross -sectional area of 1.0 x 10-6 m2. What is the resistance of the shorter wire? A 0.15 Ω B 0.60 Ω C 2.4 Ω D 9.6 Ω 19 In which circuit is the fuse connected in the correct position? 20 An electrical appliance has a power rating of 0.60 kW. The cost of electricity is 22 cents / kWh. What is the cost of using the electrical appliance for 2 hours? A 13 cents B 18 cents C 26 cents D 27 cents

9 SGSS/Sc(Phy/Chem)/P1/4E5N4NA(OOS)/Prelim/2025

St. Gabriel’s Secondary School 2025 ‘O’ Preliminary Examination Subject : Science(Physics) Paper : 5086/02 Level/Stream : Sec 4E/5N/4NAOOS Duration : 1 hour 15 minutes Date : 25 August 2025 Additional material : Nil READ THESE INSTRUCTIONS FIRST Write your name, register number and class in the spaces provided above in this page. Write in dark blue or black pen. Do not use staples, paper clips, highlighters, glue or correction fluid. Section A: Answer all questions. The total mark for this section is 55 marks. Section B: Answer one questions. The total mark for this section is 10 marks. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of Physics than for correct answers. The number of marks is g