
AQA A-level Physics Turning Points lesson on TEM and STM electron microscopes. 15 editable slides, 27-mark worksheet, mark scheme and PDFs.
What’s in the PowerPoint
• A de Broglie recap starter, with answers in the speaker notes
• Why electrons resolve finer detail than light
• A worked example showing about 150 V resolves atoms
• How a TEM works and what limits it, with a diagram
• How an STM works, in constant height and constant current modes
• 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 resolution, magnetic lenses and tunnelling
• Wavelength and anode voltage calculations
• A 5-mark answer on the TEM
• A 4-mark answer on the STM
• 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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