Catholic High 2023_Year 4 Physics_TA1_FINAL

Name: Index Number: Class: CATHOLIC HIGH SCHOOL Term 1 Class Test Year 4 (Integrated Programme) PHYSICS Chapters 7, 8 & 10 to 15: Pressure, Kinetic Model of Matter, Temperature, Transfer of Thermal Energy, General Wave Properties, Light, Electromagnetic Spectrum & Sound 14 February 2023 40 minutes READ THESE INSTRUCTIONS FIRST Write your name, index number and class on all the work that you hand in. Write in dark blue or black pen. Do not use paper clips, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. At the end of the examination, fasten all your work securely together. Section A: Multiple Choice There are ten 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 the table provided at the end of this section. 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. Section B: Structured You may use an HB pencil for any diagrams or graphs. Answer all questions. Candidates are reminded that all quantitative answers should include appropriate units. Candidates are advised to show all their workings 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 given in brackets [ ] at the end of each question or part question. For examiner’s use only: Section A / 10 Section B / 25 formula s.f.   Total / 35 This document consists of 11 printed pages.

2 Section A Answer all the questions in this section. Record your choice in the table provided. Answers for Section A 1 2 3 4 5 6 7 8 9 10 1 The figure below shows a simple hydraulic press with circular pistons X and Y. Which of the following changes will enable a heavier load L to be lifted? Diameter of X Diameter of Y A doubled remain the same B doubled halved C remain the same halved D halved doubled 2 The apparatus which is used to demonstrate Brownian Motion is shown in the diagram. Light is shone through the smoke cell and the motion of smoke particles inside the smoke cell is viewed through the microscope. Why is each smoke particle seen to move in continuous random motion? A Air molecules collide with smoke particles. B Convection currents causes the air molecules to move. C Smoke particles gain kinetic energy from the light. X Oil L Y

3 P D The smoke particles are colliding with each other. 3 A mercury-in-glass thermometer and a thermocouple thermometer are both calibrated using the same fixed points of 0 ºC and 100 ºC. When both thermometers are used to measure the temperature of a body, the temperatures indicated on both thermometers will be exactly the same