
AQA A-level Physics Turning Points lesson on Newton, Huygens and Young’s double slit. 17 editable slides, 26-mark worksheet, mark scheme and PDFs.
What’s in the PowerPoint
• A waves recap starter, with answers in the speaker notes
• Newton’s corpuscular theory and Huygens’ wave theory
• Huygens’ principle, with a wavelet diagram
• Why Newton’s theory was preferred for over 100 years
• Young’s double slit: a model answer explaining the fringes, and what each theory predicts
• A common mistakes slide
• Six check questions with answers, and an exit ticket
• Teacher notes on every slide: textbook pages, spec references, misconceptions and demo ideas
What’s in the worksheet (26 marks)
• Recall of both theories and Huygens’ principle
• Explaining the fringes with Huygens’ theory, with no calculations, as the spec requires
• Newton’s prediction and why Young’s result was not accepted at once
• Drawing Huygens’ explanation of refraction
• A full mark scheme with mark points, on separate pages
• PDF copies of the slides, the student worksheet (no answers) and the mark scheme, ready to print
Good for
First teaching, revision, homework, cover lessons or independent study. The PowerPoint and Word files are fully editable, and the PDFs are ready to print or share with students.
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