THE READING DESK · FIRST ASSESSMENT 2025

Find the idea.
Then find the reading.

A textbook guide to IB Physics HL. Start with a syllabus topic, follow the relevant sections, then return to a problem with a clearer picture.

24 topics5 themesExperimental skills
A

Space, time and motion

A.1KinematicsSL & HL

Connect position, velocity and acceleration graphs before attempting two-dimensional motion. Section 6.2 is a terminal-speed application; return to A.2 for the force model.

Link to A.1
A.2Forces and momentumSL & HL

Draw the interactions before choosing equations. Supplement the chapter reading with your course treatment of buoyancy and Stokes’ law; the topic label alone does not capture every SL/HL depth difference.

Link to A.2
A.3Work, energy and powerSL & HL

Track the system boundary and decide whether work or conservation of energy is the useful starting point.

Link to A.3
A.4Rigid body mechanicsHL only

Connect angular quantities to their linear counterparts. Use the IB guide to select moment-of-inertia and rotational problems at the intended depth.

Link to A.4
A.5Galilean and special relativityHL only

Include spacetime diagrams and worldlines in your practice. Algebraic time-dilation problems alone are not the whole topic.

Link to A.5
B

The particulate nature of matter

B.1Thermal energy transfersSL & HL

Start with thermal transfer, heat capacity and latent heat. Section 38.4 is titled “The Birth of Quantum Physics”; its usefulness for this topic still needs a closer content review.

Link to B.1
B.2Greenhouse effectSL & HL

Thermal-radiation physics provides a foundation. Add the climate articles for albedo, the atmosphere and planetary energy balance; the Halliday selections alone are not a complete greenhouse-effect guide.

Link to B.2
B.3Gas lawsSL & HL

Connect the macroscopic gas laws to a particle model, stating the assumptions behind an ideal gas.

Link to B.3
B.4ThermodynamicsHL only

Keep a consistent sign convention for heat and work, and interpret processes on pressure–volume diagrams.

Link to B.4
B.5Current and circuitsSL & HL

Apply charge and energy conservation to circuits, and distinguish resistance from resistivity. Check your course notes for the required treatment of charge-carrier drift.

Link to B.5
C

Wave behaviour

C.1Simple harmonic motionSL & HL + additional HL

Link the restoring force, acceleration, displacement and energy of an oscillator. Use calculus derivations as support where helpful.

Link to C.1
C.2Wave modelSL & HL

Separate the motion of a particle from the propagation of a wave. Compare mechanical and electromagnetic examples.

Link to C.2
C.3Wave phenomenaSL & HL + additional HL

Focus on interpreting interference, diffraction, reflection and refraction. These selections are a starting point; check the syllabus treatment of polarization and avoid treating every undergraduate derivation as required.

Link to C.3
C.4Standing waves and resonanceSL & HL

Identify boundary conditions and allowed modes before using harmonic formulas. Distinguish a driven resonance from a standing-wave pattern.

Link to C.4
C.5Doppler effectSL & HL + additional HL

State whether the source or observer is moving and identify the wave type. Keep acoustic and relativistic Doppler models distinct.

Link to C.5
D

Fields

D.1Gravitational fieldsSL & HL + additional HL

Distinguish gravitational field strength, potential, force and potential energy. Use orbit problems to connect these descriptions.

Link to D.1
D.2Electric and magnetic fieldsSL & HL + additional HL

Compare field and potential descriptions. Detailed Gauss’s-law calculations, Biot–Savart applications and magnetic-material models can go beyond the IB treatment.

Link to D.2
D.3Motion in electromagnetic fieldsSL & HL

Predict the direction of the force before calculating its size. Separate electric acceleration from magnetic deflection.

Link to D.3
D.4InductionHL only

Prioritize magnetic flux, Faraday’s law and Lenz’s law. The selected AC reading needs careful scoping; quantitative RL transients and full RLC response are optional depth.

Link to D.4
E

Nuclear and quantum physics

E.1Structure of the atomSL & HL + additional HL

Connect scattering evidence, spectra and energy levels to the development of atomic models.

Link to E.1
E.2Quantum physicsHL only

Read for the physical meaning of photons and matter waves. Check the full guide for required content beyond this selection; it is not a complete quantum-physics checklist.

Link to E.2
E.3Radioactive decaySL & HL + additional HL

Distinguish activity, decay constant and half-life. Connect nuclear transformations to mass–energy changes.

Link to E.3
E.4FissionSL & HL

Follow the energy and neutrons through a fission chain reaction. Separate the nuclear process from the engineering of a reactor.

Link to E.4
E.5Fusion and starsSL & HL

Use Halliday for the nuclear foundations, then select the stellar readings below. Focus on parallax, spectra, H–R diagrams, fusion conditions and mass-dependent evolution. Detailed pulsar physics and named remnant mass limits are enrichment; Cepheid variables are excluded in the referenced IB guide.

  • §§ 43.4–43.5, 13.1–13.3, 18.6

  • Ryden & PetersonSupplementary

    §§ 13.1–13.4

    Observations: parallax, luminosity, surface temperature and stellar radius.

  • Ryden & PetersonSupplementary

    §§ 14.2–14.4

    Classification: spectra and H–R diagrams. Prioritize reading the diagram and connecting temperature, luminosity and radius.

  • Ryden & PetersonSupplementary

    §§ 14.1, 15.2–15.3

    Pressure balance and fusion: focus on the physical explanation and the conditions needed for fusion.

  • Ryden & PetersonSupplementary

    §§ 17.1–17.2, 18.1–18.3

    Evolution and remnants: select the qualitative, mass-dependent pathways. Detailed pulsars, compact-object equations and named mass limits are optional depth.

  • Ryden & PetersonOptional depth

    § 15.1

    Equations of stellar structure: an undergraduate extension, not a required IB derivation.

Link to E.5
ACROSS EVERY THEME

Experimental physics & data analysis

Practise reporting absolute and percentage uncertainties, propagation, error bars, maximum- and minimum-gradient lines, linearization, and evaluation of methods. The book supports these skills; it does not replace IB-specific practical guidance.

  • John R. TaylorMain reading

    Ch. 1, 2, 3

    Start with reporting measurements and propagating uncertainties. Select the introductory methods needed for your experiment.

  • John R. TaylorSupplementary

    Ch. 4

    Statistical treatment of repeated measurements; use selected sections rather than assuming the whole chapter is required.

  • John R. TaylorOptional depth

    Ch. 8

    Least-squares fitting is useful depth. Also practise IB’s graphical treatment of uncertainty in a gradient.

KEEP THE RIGHT BOOK OPEN

Editions & sources

These links identify the editions and supporting articles. A publisher’s table of contents confirms a reference, not complete syllabus coverage.

NASA Earth Observatory

Climate and Earth’s Energy Budget

Free online article

Follow incoming sunlight, reflected radiation and outgoing infrared radiation. This is a historical explanatory article; its numerical budget is not a current measurement.

UCAR Center for Science Education

The Energy Budget

Free online article

A visual introduction to Earth’s energy flows and the roles of the surface and atmosphere.

Curriculum reference: IB Physics guide, first assessment 2025 (PDF). Topic names and level labels were checked against its syllabus roadmap. Consult your school’s current guide and updates for assessment requirements.

References checked 2026-11-13. This is an independent reading guide, not an IB publication or a complete course.