SP4c Refraction | Edexcel GCSE Physics Separate Science Topic Mastery Pack

A focused three-component revision and exam practice pack for SP4c, covering the complete Edexcel Separate Science Physics specification for wave refraction (P4.10, including Higher tier).

Topic Mastery Sheet covers the definition of refraction and when it occurs; the direction of bending at each type of boundary; a labelled ray diagram showing refraction through a parallel-sided glass block including the emergent ray; which wave properties change at a boundary and which do not; and Higher tier content on the mechanism by which speed change causes direction change. Everyday examples of refraction are included with explanations.

Student Exam Practice Sheet includes a multiple choice question on the normal, a Higher tier explanation question on why a ray bends, a ray diagram completion question, a question on prism dispersion, and a question linking refraction to the wave speed equation. Question format and mark allocations match the Edexcel unit test.

Teacher Answer Key provides a complete mark scheme with specific notes on what the ray diagram requires for each mark and what is required for the dispersion question.

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