What is the relationship between sound frequency (300–1000 Hz) and the first harmonic resonant length of a closed air column, and how can this relationship be used to experimentally determine the speed of sound in air?SL
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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
Good
A.3Methodological considerations
Excellent
Criteria Feedback
- The student framed a focused and feasible investigation with a clear physical context.
- The student explained the resonance model and used it to justify the procedure.
- The student showed good awareness of practical factors such as end correction and controlled variables.
- Some operational details are still missing, such as exact device settings and how resonance was judged.
- The frequency uncertainty is assumed rather than justified.
- A few controls are described too loosely to guarantee full reproducibility.
Criteria B: Data Analysis
5/6
0
3
6
Criteria StrandsPro
B.1Communication of data recording and processing
Excellent
B.2Consideration of uncertainties
Good
B.3Data processing quality
Good
Criteria Feedback
- The student presents the raw and processed data in a clear, organized way with repeated trials and units.
- The student carries uncertainty through the analysis and includes error bars and gradient-based uncertainty estimates.
- The student's main processing is appropriate and their linearization leads to a sensible final value for the speed of sound.
- Some rounded values reduce consistency with the regression and final plotted results.
- A few uncertainty assumptions are not fully justified, including the frequency source.
- The processing would be stronger if the handling of anomalous points and residuals were shown more explicitly.
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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- 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.
Criteria D: Evaluation
5/6
0
3
6
Criteria StrandsPro
D.1Methodological weaknesses
Excellent
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.