Exam-style question
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Evaluate a student answer to Define Wavelength Frequency Period Amplitude And Phase: what must be included for full A-Level credit?.
Model answer
What a good answer should say
- Evidence Trace response 12e0d0: state Define wavelength, frequency, period, amplitude and phase., apply phase difference, path difference, stationary wave, progressive wave, diffraction, and finish with the physical consequence for Progressive and stationary waves.
Explanation
Why this works
Stem being answered: Evaluate a student answer to Define Wavelength Frequency Period Amplitude And Phase: what must be included for full A-Level credit? Route focus: waves / Progressive And Stationary Waves.
Key vocabulary for this item: wavelength, frequency, period, amplitude, phase. 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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