
AQA A-level Physics Turning Points lesson on time dilation and length contraction. 17 editable slides, 27-mark worksheet, mark scheme and PDFs.
What’s in the PowerPoint
• A relativity recap starter, with answers in the speaker notes
• The light clock and proper time
• Time dilation with a worked example
• Muon decay as evidence, with a fully worked count calculation
• Length contraction with a worked example
• 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 (27 marks)
• Recall of proper time and proper length
• Lorentz factor, dilation and contraction calculations
• A multi-step muon count question
• Exam-style question on the muon evidence
• 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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