IB Physics SL Extended Essay Example

The student communicates a clear Physics topic that is easy to understand from the start.

The student's research question is specific enough to guide the investigation and stay connected to the data.

The student provides a substantial method with apparatus, controls, repeated readings, and supporting visuals.

The method does not fully justify how the corrosion variable is being measured.

Some important variables affecting the string’s behaviour are not controlled or verified well enough.

The investigation would be stronger if the scope were narrowed more tightly to the exact string system used.

The student uses a good range of relevant Physics terminology, including standing waves, resonance frequency, tension, and linear mass density.

The student shows clear understanding of the basic relationship between string properties and frequency.

The student's explanations are generally understandable and usually connected to the investigation.

Some technical terms and procedures are used inaccurately or too loosely.

The electrochemical interpretation is not always secure, especially where corrosion and Tafel analysis are discussed.

A few claims would be stronger if the student defined the exact string type and reaction context more precisely.