Common Mistakes in IB Physics HL
Many students lose marks on the IB Physics HL exam not from a lack of knowledge, but from small, recurring errors. Awareness of these common pitfalls is the first step to avoiding them.
Conceptual and Calculation Errors
- Ignoring Vector Nature Always treat displacement, velocity, force, and fields as vectors; use vector addition.
- Confusing Internal Energy and Heat Remember that internal energy is a property of a system; heat is energy in transit.
- Mixing up Radians and Degrees Check your calculator mode, especially for circular motion and simple harmonic motion.
- Forgetting Uncertainty Propagation When calculating a result from measured values, always propagate the uncertainties correctly.
- Misinterpreting 'Explain' vs. 'State' Pay close attention to command terms. 'Explain' requires a reason; 'State' needs only a concise answer.
- Neglecting Units in Final Answers Always include the correct SI units with your final numerical answers to avoid losing marks.
- Making Rounding Errors Keep intermediate calculations to a higher precision and only round the final answer.