How is the viscosity (poise) of translucent honey dependent on its temperature (°C), as measured by the time taken for a metal ball to fall a fixed distance through it in a 10 cm3 measuring cylinder?HL
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7
Official IB Result
IB Grade: 7
Criteria A: Research Design
6/6
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 posed a focused, measurable question with clear independent and dependent variables.
- The student's background gives a sensible physics rationale for why temperature should affect viscosity.
- The student outlined a method with repeated trials, controlled variables, and enough detail for another student to follow the basic setup.
- The student's temperature treatment is not fully consistent with the model they later use, because the analysis requires kelvin.
- Some procedural details are ambiguous or internally inconsistent, which limits full reproducibility.
- The justification for collecting sufficiently valid data could be developed more fully, especially around terminal velocity and wall effects.
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 are well organized with repeated trials across multiple temperatures.
- The student made a genuine attempt to propagate uncertainty through derived quantities rather than ignoring measurement error.
- The student's processing shows a clear route from raw times to velocity, viscosity, and transformed data for further analysis.
- Several calculations are not communicated with enough precision to be easily checked, especially the worked examples.
- The temperature transformation used for the linearisation is not physically consistent with the model.
- Some units, labels, and numerical values are inconsistent, which reduces confidence in the accuracy of the processing.
Criteria C: Conclusion
4/6
0
3
6
Criteria StrandsPro
C.1Conclusion relevance and support
Good
C.2Scientific context comparison
Poor
Criteria Feedback
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- 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
6/6
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.