IB Physics revision notes are most effective when you use them to retrieve knowledge, connect concepts and solve questions, rather than simply rereading them. Work through the syllabus in order, test yourself after each short section, and then complete exam-style questions without consulting the notes.
The current IB Physics course, first assessed in 2025, is organized into five themes: space, time and motion; the particulate nature of matter; wave behaviour; fields; and nuclear and quantum physics. The following method shows how to revise each theme while preparing for the skills assessed in Papers 1 and 2.
Understand what the IB Physics exams assess
According to the official IB Physics subject brief, external examinations contribute 80% of the final grade and the scientific investigation contributes 20%. Paper 1 accounts for 36% and includes multiple-choice and data-based questions, while Paper 2 accounts for 44% and uses short-answer and extended-response questions.
This means effective notes must support more than factual recall. They should help you:
-
explain physical models and assumptions
-
choose and apply equations
-
interpret graphs and experimental data
-
use units, uncertainties and significant figures correctly
-
connect ideas from different parts of the syllabus
-
construct clear extended responses
The revised course has no separate option topics. Material is instead organized within the five themes described on the official IB Physics curriculum page and the IB's Physics curriculum update.
A practical method for using topic notes
Use a four-stage cycle for every subtopic.
StageWhat to doEvidence that it workedUnderstandRead a short section and inspect its diagrams or worked examples.You can explain the model in your own words.RetrieveClose the notes and reconstruct definitions, graphs and relationships.You recall the main ideas without prompts.ApplyAnswer several questions of increasing difficulty.You can select an approach without copying an example.CorrectCompare your work with a solution and record the cause of each error.You can redo the question correctly later.
Keep each reading period short. After approximately two or three pages, close the notes and write what you remember on blank paper. Reopening the notes immediately feels productive, but it does not reveal what you can retrieve under examination conditions.
Your correction record should classify errors as conceptual, mathematical, data-booklet, unit, or question-reading errors. This is more useful than recording only the final mark because it identifies the behaviour that needs to change.
Theme A: Space, time and motion
Begin with A.1 kinematics, A.2 forces and momentum, and A.3 work, energy and power. HL students must also study A.4 rigid body mechanics and A.5 Galilean and special relativity.
For A.1, reconstruct displacement-time, velocity-time and acceleration-time graphs from memory. Annotate what gradient and area represent, then check your explanation against the A.1 Kinematics notes.
For forces and momentum, draw a free-body diagram before selecting an equation. Use the A.2 Forces and Momentum topic page for linked notes, flashcards and practice questions. Circular motion deserves separate practice because students often mistake centripetal force for an additional force rather than the resultant inward force; the A.2.4 Circular Motion practice resources can help isolate this misconception.
Theme B: The particulate nature of matter
Theme B covers thermal energy transfers, the greenhouse effect, gas laws and current and circuits. B.4 thermodynamics is HL-only.
Organize your notes around models. For gas laws, distinguish macroscopic variables such as pressure and temperature from the microscopic motion of particles. Then practise moving between verbal descriptions, graphs and equations using the B.3 Gas Laws notes.
For circuits, create a comparison sheet for current, potential difference, resistance, resistivity, electromotive force and power. Include units and measurement methods, but avoid treating definitions as interchangeable.
Theme C: Wave behaviour
Theme C includes simple harmonic motion, the wave model, wave phenomena, standing waves and resonance, and the Doppler effect. HL students study additional material within several of these topics.
Draw the defining diagrams yourself: displacement against time for simple harmonic motion, wavefronts at boundaries, interference patterns and standing-wave modes. Label phase relationships, nodes, antinodes, wavelengths and relevant path differences.
Follow each diagram with a question. For example, after revising standing waves, calculate an allowed wavelength or frequency and explain why only particular modes form. This combination of visual reasoning and calculation is more robust than memorizing isolated equations.
Theme D: Fields
Theme D covers gravitational fields, electric and magnetic fields, and motion in electromagnetic fields. D.4 induction is HL-only, while HL students also encounter extensions within shared topics.
Build a comparison table for gravitational, electric and magnetic interactions. Include the source of each field, the quantity acted upon, field direction, force relationship and potential-energy ideas. Explicit comparisons reduce confusion between similar inverse-square equations.
Practise sketching field lines and potential against distance before calculating. In induction questions, always identify the changing magnetic flux linkage and use Lenz's law to justify the direction of the induced effect.
Theme E: Nuclear and quantum physics
Theme E contains atomic structure, quantum physics, radioactive decay, fission, and fusion and stars. E.2 is HL-only, while E.1 and E.3 contain additional HL content.
Create notes that connect experimental evidence with the model it supports. Examples include scattering evidence for nuclear structure, emission spectra as evidence for discrete energy levels and the photoelectric effect as evidence for quantized photon energy.
For radioactive decay, practise activity and population calculations alongside graph interpretation. For fission and fusion, connect mass defect and binding energy to energy release rather than memorizing reactions without explanation.
Use the data booklet as part of your notes
A clean Physics data booklet is available in every SL and HL examination, so revision should emphasize equation selection and interpretation rather than indiscriminate memorization. Use the IB Physics data booklet resource beside your topic notes.
For each equation, annotate:
-
what every symbol represents and its SI unit
-
the conditions or assumptions under which the equation applies
-
the graph associated with the relationship
-
common rearrangements
-
one situation in which the equation should not be used
Do not annotate the booklet you expect to use in an examination. Practise with a clean version regularly so that you learn where equations are located.
Turn notes into examination performance
After completing a subtopic, answer questions without notes and under a time limit. Paper 1 preparation should include rapid equation selection, data analysis, graph interpretation and checking alternatives. Paper 2 preparation should include full working, explanations using precise physics and extended questions that connect multiple themes.
The IB provides sample examination papers that can help you recognize the current format. Begin with topic-specific practice, but move to mixed sets once the foundations are secure because the examination can combine knowledge from different areas.
A useful weekly pattern is:
-
Review one topic using the complete IB Physics revision notes collection.
-
Retrieve the definitions, diagrams and relationships from memory.
-
Complete linked topic questions.
-
Mark and classify every error.
-
Reattempt missed questions two or three days later.
-
Finish the week with a mixed timed set.
Common mistakes when revising from notes
The most common mistake is highlighting or copying information without testing recall. Other problems include memorizing formulas without their assumptions, revising only comfortable topics and reading worked solutions before making a genuine attempt.
Do not postpone questions until you have “finished” all the content. Question practice reveals misconceptions that passive reading conceals. It also trains the communication, graphing and data-analysis skills that the IB assesses directly.
Conclusion
Effective IB Physics revision notes should function as a map, not as the entire revision process. Work through Themes A to E, retrieve ideas from memory, use the data booklet intelligently and complete linked questions after every subtopic.
RevisionDojo's IB Physics resource hub brings together topic notes, flashcards, explanations and practice materials. Use the notes to establish understanding, then use the Questionbank and Jojo AI to analyse errors and strengthen weaker topics.
