IB Physics SL Internal Assessment Example

You set the investigation in a clear and specific real-world context, which makes the purpose of the study easy to understand.

You identify the key variables and give a sensible range and step size for the wire lengths.

You include repetition and several control ideas, showing awareness of what needs to be kept consistent in the investigation.

Some controls are named but not fully explained in practical terms, especially how they were actually maintained during testing.

Important details such as the exact supply setting and how the wire length was fixed each time are missing.

The measurement of wire diameter needs clearer justification because later calculations depend heavily on it.

Your data are presented clearly with tables, units, and labelled calculations so the reader can follow the processing.

You consider uncertainty rather than ignoring it, and you include error bars and an estimate of gradient uncertainty.

You process the measurements into resistance values and use the graph to identify the overall relationship between the variables.

The uncertainty treatment is not fully consistent throughout the work, especially where different uncertainty values are used in different places.

Some processing choices are not fully justified, particularly in the comparison between the experimental and theoretical gradient.

There are signs of unit or parameter issues in the theoretical comparison, which weakens the accuracy of the final processed result.