Sec 1 NA St Patrick's School Science EOY 2023

106 St. Patrick's School End-Of-Year Examinations 2023 Subject : SCIENCE Date : 12 OCT 2023 Level : SECONDARY 1 NORMAL (ACADEMIC) Duration : 2 H INSTRUCTIONS TO CANDIDATES: DO NOT OPEN THIS BOOKLET UNTIL YOU ARE TOLD TO DO SO. 1. Write your name, class and index number on the Question Paper and the Optical Answer Sheet in the spaces provided. It is also required that you SHADE your index number on the Optical Answer Sheet. 2. This paper consists of Three (3) Sections: Section A, Section B and Section C. 3. Answer ALL questions in Section A on the Optical Answer Sheet provided. 4. Answer ALL questions in Section B and Section C in the spaces provided. 5. Calculators may be used where necessary. Give all numerical answers to 3 significant figures. 6. DO NOT DETACH any sections from this paper. 7. Submit the Optical Answer Sheet and this paper SEPARATELY. INFORMATION FOR CANDIDATES: The number of marks is given in brackets [ ] at the end of each question. FOR MARKER’S USE ONLY: Section A [20] B [30] C [30] Total [80] Grade Score This question paper consists of 23 printed pages including this cover page. Section A: [20 marks] Each question is provided with four possible answers ( A, B, C and D). Select the most appropriate answer and shade you answers in the Optical Answer Sheet. 1 Which option correctly describes the ‘open-mindedness’ of a good scientist? A not falsely report one’s observations to fit beliefs B stick to the truth until the scientist’s discovery is proven C conducting the investigation a few times to obtain reliable results D be willing to accept that something could happen contrary to popular belief 2 The following hazard symbols are found on a bottle containing a chemical in the laboratory. Which row correctly identifies each hazard symbol? I II III A irritant explosive corrosive B corrosive flammable irritant C corrosive explosive toxic D irritant flammable toxic 3 Which process should be conducted before carrying out an experiment? A analyse data B recording data C forming conclusions D proposing hypothesis 4 At which position should the eye be placed to take the reading from the measuring cylinder?

107 5 A student bought some pencil lead with a thickness of 0.50 mm. He measured the thickness of his pencil lead and recorded the readings in the table. no. of readings 1st 2nd 3rd readings (mm) 0.59 0.60 0.59 Which option correctly describes the accuracy and precision of his readings? accuracy precision A low high B low low C high low D high high 6 When a student was cleaning, he noted that dust particles take a long time to settle down on surfaces. Why do dust particles take a long time to settle down? A Dust particles are less dense than air. B Gravity has no effect on tiny dust particles. C Air molecules that are always movin