How does the placement of a fan (at the front vs. at the rear of a wind tunnel) affect the turbulence of airflow inside a homemade wind tunnel?SL
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B
Official IB Result
IB Grade: B
Criteria A: Focus and Method
4/6
0
3
6
Criteria StrandsPro
A.1Topic clarity and communication
Excellent
A.2Research question formulation and focus
Excellent
A.3Methodology appropriateness and completeness
Moderate
Criteria Feedback
- The student communicates a clear and relevant investigation topic with a practical purpose.
- The student's research question is specific enough to guide the procedure and comparison.
- The student's method is well organized and includes several thoughtful controls and repeated trials.
- The student's investigation would be stronger if the measurement matched the quantity they are claiming to study more directly.
- Some methodological choices need clearer justification, especially the proxy used for turbulence.
- A few parts of the scientific wording are imprecise, which weakens the overall focus.
Criteria B: Knowledge and Understanding
3/6
0
3
6
Criteria StrandsPro
B.1Subject knowledge application
Moderate
B.2Use of terminology and concepts
Moderate
Criteria Feedback
- The student shows sound understanding of several relevant fluid-dynamics ideas such as laminar flow, turbulent flow, swirl, and flow conditioning.
- The student uses appropriate subject terminology in many places and connects theory to the practical investigation.
- The student applies background knowledge to explain why fan position might influence the airflow in the tunnel.
- Some scientific explanations and equations are not fully accurate or consistent.
- The report sometimes treats a proxy measure as if it were the standard physical quantity it is trying to approximate.
- The relationship between the indicator movement and the underlying airflow needs a more secure conceptual explanation.
Criteria C: Critical Thinking
8/12
0
6
12
Criteria StrandsPro
C.1Research analysis and evaluation
Poor
C.2Discussion and argument development
Poor
C.3Critical evaluation
Poor
Criteria Feedback
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Criteria D: Presentation
3/4
0
2
4
Criteria StrandsPro
D.1Structure and formatting
Moderate
D.2Layout and visual elements
Moderate
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.