Exam-style question
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Define diffraction and refraction in the context of wave behavior.
Model answer
What a good answer should say
- Diffraction is the bending of waves around obstacles or through openings, resulting in the spreading of waves.
- Refraction is the change in direction of waves as they pass from one medium to another due to a change in wave speed.
Explanation
Why this works
This answer clearly defines both concepts, highlighting their distinct characteristics. It tests the student's understanding of wave behavior in different scenarios.
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