How does the tension of a string affect the frequency of its second harmonic when length and linear mass density are kept constant in a simulation? Candidate Session Number: mhm875SL
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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
Excellent
A.2Methodological considerations for collecting data
Moderate
A.3Methodological considerations
Excellent
Criteria Feedback
- The student's research question is focused, measurable, and clearly set in a meaningful simulation context.
- The student justifies the investigation with a relevant real-world motivation and a sound theoretical link to standing-wave behavior.
- The student's method is mostly reproducible, with a clear range, repeated trials, and controlled variables tied to the model.
- One key value for linear density is inconsistent across the report, which weakens reproducibility and coherence.
- The resonance-identification step could be described more precisely so another reader could follow it without ambiguity.
- The student's uncertainty rationale would be stronger if they explained where the stated uncertainty values come from.
Criteria B: Data Analysis
5/6
0
3
6
Criteria StrandsPro
B.1Communication of data recording and processing
Good
B.2Consideration of uncertainties
Good
B.3Data processing quality
Good
Criteria Feedback
- The student's raw and processed tables are generally clear and easy to follow.
- The student uses an appropriate linearization and their numerical processing is mostly consistent with the data shown.
- The student makes meaningful use of uncertainty, including repeated readings and propagated uncertainty in the processed quantities.
- The graph-based communication is incomplete because key features such as visible error bars and fitted lines are not shown clearly.
- There is an inconsistency in the reported linear-density value that undermines the reliability of the processing interpretation.
- Some uncertainty choices are not fully justified, especially the absolute tension uncertainty and the way processed uncertainties are handled.
Criteria C: Conclusion
5/6
0
3
6
Criteria StrandsPro
C.1Conclusion relevance and support
Excellent
C.2Scientific context comparison
Excellent
Criteria Feedback
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Criteria D: Evaluation
5/6
0
3
6
Criteria StrandsPro
D.1Methodological weaknesses
Good
D.2Suggested improvements
Excellent
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.