How does the intensity of radiation, varied by the change of distance from the halogen lamp (20cm, 30cm, 40cm, 50cm, 60cm), affect the temperature of equilibrium the copper plate reaches, as measured by a temperature sensor?SL
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6
Official IB Result
IB Grade: 6
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
Good
Criteria Feedback
- The student framed a focused, measurable investigation with clearly identified variables and a relevant thermal-radiation context.
- The student's method is generally reproducible because they include apparatus, distance values, repeats, controls, and practical setup details.
- The student showed awareness of key methodological issues such as equilibrium, alignment, airflow, and the limits of the chosen distance range.
- The equilibrium condition is still too subjective and needs a numerical rule so another person could reproduce it exactly.
- Some aspects of the data-collection method remain unclear, especially the exact sensor geometry and how the intensity readings were taken.
- The justification for using the light sensor as a proxy for the relevant radiation quantity is not fully secure.
Criteria B: Data Analysis
4/6
0
3
6
Criteria StrandsPro
B.1Communication of data recording and processing
Moderate
B.2Consideration of uncertainties
Moderate
B.3Data processing quality
Poor
Criteria Feedback
- The student presents their data in a structured way with raw tables, processed values, sample calculations, and graphs that make the overall flow of the analysis easy to follow.
- The student uses repeated measurements and uncertainty estimates, which shows awareness that experimental data must be treated cautiously.
- The student carries uncertainty through to later results and includes error bars and slope bounds, which strengthens the transparency of their analysis.
- The conversion from lux to radiometric intensity is not physically well justified for a halogen source, so the main input to the model is uncertain.
- Some processing steps and labels need closer checking, especially units such as the fourth-power temperature axis.
- The student's uncertainty treatment is incomplete in places because random scatter, instrument resolution, and systematic effects are not clearly separated.
Criteria C: Conclusion
4/6
0
3
6
Criteria StrandsPro
C.1Conclusion relevance and support
Moderate
C.2Scientific context comparison
Moderate
Criteria Feedback
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Criteria D: Evaluation
4/6
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.