IB Physics HL Study Guide & Review
Integrate shared and additional higher-level models, develop controlled multi-stage solutions and prepare separately for conceptual, data-based and extended IB Physics HL assessment demands across the current syllabus.
- 01Learn concepts
- 02Practise questions
- 03Review mistakes
Syllabus knowledge tree
Explore the IB Physics HL syllabus
The current IB Physics HL syllabus uses five themes explored through forces, energy and particles, with additional higher-level depth including rigid-body mechanics, relativity, thermodynamics, induction and quantum physics. Use the Unit and Topic map to connect shared and HL-only models.
- 6
- syllabus groups
- 30
- mapped topics
Preview the course map
Explore the course units and topics. Sign in to open the full mastery workspace and see your progress.
How to study IB Physics HL
IB Physics HL is not SL plus a detached list of extra facts. Use the syllabus map to connect rigid-body mechanics, relativity, thermodynamics, induction and quantum physics to the five shared themes. For every problem, decide which system, frame, state variables, field or particle model applies; represent it clearly; state assumptions; and predict the result before calculation. This makes longer Paper 2 chains easier to control and exposes where two models must be combined.
Rebuild difficult representations in Concept, retrieve relationships and conditions in Mastery, then use the Question Bank for staged mixed-theme practice. Classify every loss as model choice, missing assumption, derivation, algebra, units, graph or evidence interpretation. Repair the exact category and redo the setup without notes before attempting a harder variation.
Practise HL models by representation
Use distinct representations for additional higher-level Topics, then combine them deliberately with shared material in progressively longer problems.
Rigid bodies and relativity
Torque, angular momentum, reference frames and spacetime
Switch deliberately between force diagrams, rotational quantities and spacetime representations. State the frame and invariant or conservation principle before deriving, calculating and interpreting the result in its physical context clearly.
Practise advanced motionThermodynamics
First and second laws, entropy, gas processes and heat engines
Define the system and sign convention, identify state and path quantities, then trace energy and entropy changes across each process before using equations, cycle diagrams or efficiency comparisons.
Practise thermodynamicsFields and induction
Field motion, flux, induced emf and electromagnetic interactions
Draw field direction and geometry, identify what changes with time, and use sign or direction reasoning before magnitude. Connect flux, force, energy and motion across the full chain.
Practise fieldsQuantum and nuclear models
Evidence, wave–particle behaviour, decay, fission, fusion and stellar physics
Separate observation from model inference. State what the evidence rules out or supports, then connect energy, momentum and probability relationships without mixing incompatible classical and quantum assumptions together.
Practise quantum and nuclearMixed Paper 1B and Paper 2 reasoning
Graphs, uncertainty, experiments and multi-theme structured problems
Annotate the data and plan the sequence before calculating. Keep intermediate values, units and assumptions visible, then evaluate whether the final magnitude and conclusion fit all available evidence.
Open mixed HL practiceWhere to start
Begin from one precise HL weakness or use mixed questions to reveal where a multi-stage solution first breaks down.
Choose your starting point
- Browse the HL syllabus
I know the weak area
Open the exact shared or additional higher-level Topic and identify its model, assumptions and linked prerequisites.
- Open mixed HL questions
The failure is unclear
Attempt a mixed set and stop at the earliest repeated breakdown in setup, mathematics or interpretation.
Choose the right starting point
- Review a Concept
Select and connect models
Represent the system, state assumptions and identify where two physical principles must be linked across stages.
- Check Mastery
Reconstruct the chain
Retrieve each relationship, derive or rearrange visibly and check dimensions, direction, frame and boundary conditions.
- Practise HL questions
Stress-test and repair
Solve a mixed problem, locate the first failed decision and retry the complete setup after repair.
IB Physics HL assessment format
External assessment contributes 80% and the scientific investigation contributes 20%. Prepare separately for conceptual discrimination, data analysis and structured physical reasoning at HL.
SourceInternational Baccalaureate Organization · IB Physics subject brief — first assessment 2025IB Physics · First assessment 2025
IB Physics HL questions
Keep the shared foundations active, but integrate additional higher-level models into mixed problems. Practise rigid bodies, relativity, thermodynamics, induction and quantum physics through their distinct representations, then combine them with shared mechanics, waves, fields and energy reasoning.
Build progressively longer mixed-theme sets before full papers. Plan the model sequence, state assumptions, preserve intermediate values and units, and locate the first failed decision after marking so the repair targets setup or reasoning rather than only the final calculation.
Know how the booklet is organised, but practise selecting relationships from a physical model. Reconstruct conditions and derivations where useful, then check dimensions, sign, direction, reference frame and limiting behaviour instead of treating the booklet as a formula-matching list.
No. Use resources aligned to the course first assessed in 2025 and its Paper 1A, Paper 1B and Paper 2 structure. Older option and Paper 3 materials may cover useful physics, but they should not define your current exam plan.