cylinder of water, apparent bending of a pencil in beaker of water. Show refraction through different prisms and water containing fluorescence. Immersion of Pyrex into suitable oil/glycerol to show apparent ‘disappearance’ due to equal refractive indices. Executive function Critical thinking 24 Section 3: Waves Students will be assessed on their Activities: Edexcel International GCSE Adaptability Problem solving ability to: Physics: Pages 112–115, 116 and d) Light and sound Complete examples Analysis 126 including calculations Reasoning involving sin c = 1/n. 3.20 describe the role of total internal Interpretation reflection in transmitting information Investigate the critical angle Questions in Edexcel International Executive function along optical fibres and in prisms for Perspex/air or glass/air GCSE Physics Revision Guide: Creativity or water/air boundary. Pages 45 to 48 and Pages 97 to 99 Research/investigate 3.21 explain the meaning of critical jewellery cuts. c practical: Video clips: 3.22 know and use the relationship between critical angle and refractive Use semicircular blocks to (a) index: determine critical angle and (b) refractive index. sin c = 1 / n Demonstrations: Use an applet to show total internal reflection.
cylinder of water, apparent bending of a pencil in beaker of water. Show refraction through different prisms and water containing fluorescence. Immersion of Pyrex into suitable oil/glycerol to show apparent ‘disappearance’ due to equal refractive indices. 24 Section 3: Waves d) Light and sound Students will be assessed on their ability to: 3.20 describe the role of total internal reflection in transmitting information along optical fibres and in prisms 3.21 explain the meaning of critical c 3.22 know and use the relationship between critical angle and refractive index: sin c = 1 / n Activities: Complete examples including calculations involving sin c = 1/n. Investigate the critical angle for Perspex/air or glass/air or water/air boundary. Research/investigate jewellery cuts. practical: Use semicircular blocks to determine critical angle and refractive index. Demonstrations: Use an applet to show total internal reflection. Edexcel International GCSE Physics: Pages 112–115, 116 and 126 Questions in Edexcel International GCSE Physics Revision Guide: Pages 45 to 48 and Pages 97 to 99 Video clips: (a) (b) Executive function Adaptability Critical thinking Problem solving Analysis Reasoning Interpretation Executive function Creativity
IGCSE-physics-scheme-of-work.docx