Exam-style question
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Evaluate a student answer to Describe Observations From Cathode Ray Experiments: what must be included for full A-Level credit?.
Model answer
What a good answer should say
- Model Limit response 5f0a2c: state Describe observations from cathode ray experiments., apply Michelson-Morley, special relativity, time dilation, de Broglie wavelength, electron diffraction, and finish with the physical consequence for The discovery of the electron.
Explanation
Why this works
Stem being answered: Evaluate a student answer to Describe Observations From Cathode Ray Experiments: what must be included for full A-Level credit? Route focus: turning-points-in-physics / The Discovery Of The Electron.
Key vocabulary for this item: observations, cathode, ray, experiments. Written check: state the principle, apply it to the named context, and close with the requested conclusion.
The explanation should keep the answer tied to these exact words rather than a general physics summary, using units, graph evidence or equation reasoning only when they are relevant to the stem.
Common mistake
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