What is the impact of manipulating the distance between the hair strand and the screen on the interference pattern of a single slit diffraction?HL
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7
Official IB Result
IB Grade: 7
Criteria A: Research Design
5/6
0
3
6
Criteria StrandsPro
A.1Research question context
Good
A.2Methodological considerations for collecting data
Good
A.3Methodological considerations
Good
Criteria Feedback
- The student identified a focused, testable relationship with a clear practical purpose.
- The student provided relevant background physics and a workable hypothesis.
- The student included several thoughtful design controls such as repeats, fixed equipment, and a darkened environment.
- The student's terminology is not fully consistent, especially between interference and diffraction.
- The dependent variable is not defined with enough precision throughout the method.
- Some important procedural details are missing, so another student could not reproduce the setup completely.
Criteria B: Data Analysis
6/6
0
3
6
Criteria StrandsPro
B.1Communication of data recording and processing
Good
B.2Consideration of uncertainties
Moderate
B.3Data processing quality
Moderate
Criteria Feedback
- The student's raw data is well organised and easy to follow, with clear units and repeated trials.
- The student made a genuine attempt to quantify uncertainty using spreads, error bars, and propagation.
- The student's processing is logically connected to the physics model and leads to a plausible hair-diameter result.
- The way the measured span is converted into the final width is not always explained clearly.
- The student's uncertainty treatment is not fully consistent, especially for the gradient and its units.
- The analysis still mixes different descriptions of the same pattern, which affects precision and accuracy.
Criteria C: Conclusion
4/6
0
3
6
Criteria StrandsPro
C.1Conclusion relevance and support
Good
C.2Scientific context comparison
Moderate
Criteria Feedback
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- Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Criteria D: Evaluation
6/6
0
3
6
Criteria StrandsPro
D.1Methodological weaknesses
Moderate
D.2Suggested improvements
Good
Criteria Feedback
- Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
- Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
- Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
- Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.