OPSS 4NA Prelim Paper 2

ORCHID PARK SECONDARY SCHOOL Preliminary Examination 2022 CANDIDATE NAME CLASS INDEX NUMBER SCIENCE Paper 2 Physics Secondary 4 Normal (Academic) Setter: Ms Isa Tan 5105/02 11 August 2022 Paper 1 and 2: 1 h 15 min Additional Materials: Nil READ THESE INSTRUCTIONS FIRST Write your name and index number on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer all questions in Section A and any two questions in Section B. The use of an approved scientific calculator is expected, where appropriate. In calculations, you should show all the steps in your working, giving your answer at each stage. You are advised to spend no longer than 30 minutes on Paper 1. You may proceed to answer Paper 2 as soon you have completed Paper 1. At the end of the examination, hand in your answers to Paper 1 and Paper 2 separately. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 11 printed pages. [Turn over

2 Section A (14 marks) Answer all the questions in the spaces provided. 1 A racing yacht is moving at a constant speed on smooth water. The diagram shows the direction of the four forces acting on the yacht. (a) Name force X and force Y. force X: ………………… force Y: ………………… [1] (b) What can you conclude about the size of the thrust and f orce X when the yacht is moving at constant speed? …………………………………………………………………………….………… [1] 2 Two blocks, X and Y, are resting on a table. The dimensions of the blocks are shown in centimeters, cm. Each block has a mass of 50 g. (a) Name the apparatus used to measure the mass of the block. …………………………………………………………………………….………… [1] force X force Y upthrust thrust rudder water

3 (b) Explain which block exerts a greater pressure on the table. …………………………………………………………………………….………… …………………………………………………………………………….………… [1] (c) Calculate the density of block X. density = ..………..…..…. g / cm3 [1] 3 (a) There are two types of waves, transverse and longitudinal. Give an example of each type. transverse: …………………………………………………………………..…… longitudinal: ………………………………………………………………………. [1] (b) The diagram represents a wave. It is drawn to scale. (i) Measure the wavelength of the wave. wavelength = ..…………….…..…. cm [1] (ii) Measure the amplitude of the wave. amplitude = ….…………..…..…. cm [1] (c) Describe how sound produced by the prong of a tuning fork travels through air to reach the ear of a listener. …………………………………………………………………………….………… …………………………………………………………………………….…