Physics IA Exemplar: ¿En qué medida afecta el diámetro de partícula… | RevisionDojo

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IB Physics HL Internal Assessment Example

¿En qué medida afecta el diámetro de partícula de diferentes papeles de lija (P60, P80, P120, P160 y P220, según ISO 6344) al coeficiente de rozamiento estático entre un bloque de aluminio y un plano inclinado, determinado mediante la medición del ángulo crítico de deslizamiento y el modelo de fricción de Coulomb?HL

Official IB Result

IB Grade: 7

Criteria A: Research Design

6/6

Criteria StrandsPro

A.1Research question context

Excellent

A.2Methodological considerations for collecting data

Excellent

A.3Methodological considerations

Excellent

Criteria Feedback

The student's research question is focused, quantitative, and clearly testable.
The student places the question in a specific scientific context and explains why the chosen surface conditions are appropriate.
The student's method is detailed enough that another student could reproduce the investigation with only minor ambiguity.

A few setup details could be even more explicit, especially the pivot or hinge geometry of the incline.
The method would be stronger if the control of the tilt rate were described more precisely.
A fuller justification of assumptions such as humidity and surface condition would make the design more robust.

Criteria B: Data Analysis

6/6

Criteria StrandsPro

B.1Communication of data recording and processing

Excellent

B.2Consideration of uncertainties

Good

B.3Data processing quality

Excellent

Criteria Feedback

The student's processing is clear and logically sequenced from raw data to calculated coefficients.
The student handles uncertainty thoughtfully by including instrumental uncertainty and repeated trials.
The student's tables and graph make the data trail easy to follow and interpret.

The uncertainty treatment does not include the spread in grit diameter itself, even though that is the independent variable.
The distinction between spread in repeated values and uncertainty in the mean could be clearer.
The modelling would be stronger if the student justified the chosen logarithmic relationship against plausible alternatives.

Criteria C: Conclusion

4/6

Criteria StrandsPro

C.1Conclusion relevance and support

Excellent

C.2Scientific context comparison

Poor

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.

Criteria D: Evaluation

6/6

Criteria StrandsPro

D.1Methodological weaknesses

Good

D.2Suggested improvements

Good

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.

Loading scores...

Official IB Result

IB Grade: 7

Criteria A: Research Design

6/6

Criteria StrandsPro

A.1Research question context

Excellent

A.2Methodological considerations for collecting data

Excellent

A.3Methodological considerations

Excellent

Criteria Feedback

The student's research question is focused, quantitative, and clearly testable.
The student places the question in a specific scientific context and explains why the chosen surface conditions are appropriate.
The student's method is detailed enough that another student could reproduce the investigation with only minor ambiguity.

A few setup details could be even more explicit, especially the pivot or hinge geometry of the incline.
The method would be stronger if the control of the tilt rate were described more precisely.
A fuller justification of assumptions such as humidity and surface condition would make the design more robust.

Criteria B: Data Analysis

6/6

Criteria StrandsPro

B.1Communication of data recording and processing

Excellent

B.2Consideration of uncertainties

Good

B.3Data processing quality

Excellent

Criteria Feedback

The student's processing is clear and logically sequenced from raw data to calculated coefficients.
The student handles uncertainty thoughtfully by including instrumental uncertainty and repeated trials.
The student's tables and graph make the data trail easy to follow and interpret.

The uncertainty treatment does not include the spread in grit diameter itself, even though that is the independent variable.
The distinction between spread in repeated values and uncertainty in the mean could be clearer.
The modelling would be stronger if the student justified the chosen logarithmic relationship against plausible alternatives.

Criteria C: Conclusion

4/6

Criteria StrandsPro

C.1Conclusion relevance and support

Excellent

C.2Scientific context comparison

Poor

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.

Criteria D: Evaluation

6/6

Criteria StrandsPro

D.1Methodological weaknesses

Good

D.2Suggested improvements

Good

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.