
AQA A-level Physics Option B lesson on X-ray attenuation, CT scans and fluoroscopy. 16 editable slides, 24-mark worksheet and mark scheme.
What’s in the PowerPoint
• An exponentials starter, with answers in the speaker notes
• Attenuation, I = I₀e^(−μx), with a graph
• Half-value thickness and mass attenuation coefficient
• A worked attenuation example
• Contrast media, CT scans, fluoroscopy and flat panel detectors
• A common mistakes slide
• Six check questions with answers, and an exit ticket
• Teacher notes in the speaker notes throughout
What’s in the worksheet (24 marks)
• Recall of half-value thickness and contrast media
• Attenuation and half-value thickness calculations
• Mass attenuation coefficient
• Describing CT, fluoroscopy and flat panels
• A full mark scheme with mark points, on separate pages
Good for
First teaching, revision, homework, cover lessons or independent study. Both files are fully editable in PowerPoint and Word.
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