Same two papers at HL and SL, different depth

IB Physics HL and SL sit the same two papers, multiple-choice and data-based questions, then short and extended response, with HL covering the core topics in greater depth plus extra HL-only content. Check your syllabus carefully for exactly what's HL-only rather than assuming full overlap.

Data-based questions test interpretation, not just recall

The data-based section of Paper 1 asks you to apply physics you already know to unfamiliar data and graphs. The interpretive skill matters as much as the content knowledge here. Practising with unfamiliar data sets, reading graphs, spotting trends and uncertainties, is high-value revision time.

Calculations and uncertainty

Multi-step numerical questions carry method marks even when the arithmetic goes wrong, as long as your working and units are shown clearly. Uncertainty calculations, absolute, percentage, and combining uncertainties across a calculation, come up again and again across topics and reward mechanical, practisable skill.

Extended-response questions

  • Build a full chain of physical reasoning, not just a correct final statement. "Explain" questions are marked on the reasoning steps.
  • Show every step of a calculation, including the equation before you substitute values.
  • Check your final answer's order of magnitude for physical plausibility.

The Internal Assessment

Physics IA success comes down to choosing a research question you can genuinely investigate with the equipment and time you actually have. An ambitious-sounding question you can't rigorously execute and analyse scores worse than a modest one done well.

Where marks go missing

  • Sign errors in vector-based mechanics and field calculations.
  • Mixing up similar concepts across topics, like different types of radioactive decay or field analogies.
  • Incomplete explain-style answers that skip the reasoning chain the mark scheme rewards.

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