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Understanding how the AQA A-Level Physics qualification is structured is essential for effective exam preparation. This lesson covers the three papers, the mark allocations, assessment objectives, command words, the data and formulae booklet, and how extended response questions work. Knowing the structure means you can tailor your revision and practise under realistic conditions.
AQA A-Level Physics (specification 7408) is assessed by three written examinations taken at the end of Year 13. There is no coursework component, but practical skills are assessed through questions on the written papers and through a separate Practical Endorsement (pass/fail, reported alongside the grade but not contributing to it).
| Paper | Duration | Marks | % of A-Level | Content |
|---|---|---|---|---|
| Paper 1 | 2 hours | 85 | 34% | Sections 1-5 + 6.1 (Periodic Motion) |
| Paper 2 | 2 hours | 85 | 34% | Sections 6.2 onwards + 7 & 8 (or optional) |
| Paper 3 | 2 hours | 80 | 32% | Section A: Practical skills & data analysis (45 marks) + Section B: Optional topic (35 marks) |
The total is 250 marks across all three papers.
Paper 1 covers the content from Year 1 of the course plus Section 6.1 (Periodic Motion from Further Mechanics):
| Section | Topics |
|---|---|
| 3.1 Measurements and their errors | SI units, significant figures, uncertainties, estimation |
| 3.2 Particles and radiation | The Standard Model, photoelectric effect, energy levels, wave-particle duality |
| 3.3 Waves | Progressive waves, stationary waves, refraction, diffraction, interference |
| 3.4 Mechanics and materials | SUVAT, Newton's laws, momentum, energy, stress/strain, Young modulus |
| 3.5 Electricity | Charge, current, pd, resistance, circuits, EMF, internal resistance |
| 3.6.1 Periodic motion | Circular motion and SHM (simple harmonic motion) |
The comprehension question provides a passage about a physics topic, often unfamiliar, and asks you to apply your physics knowledge to answer questions based on the passage. Marks are awarded for extracting information, applying equations, and evaluating the physics described.
Exam Tip: The comprehension passage on Paper 1 is not something you can specifically revise for, but you can practise the skill of reading scientific prose and extracting relevant information. Past papers are the best preparation.
Paper 2 covers Year 2 content (excluding Periodic Motion, which is on Paper 1):
| Section | Topics |
|---|---|
| 3.6.2 Thermal physics | Internal energy, specific heat capacity, ideal gases, molecular kinetic theory |
| 3.7 Fields and their consequences | Gravitational fields, electric fields, capacitance, magnetic flux, electromagnetic induction |
| 3.8 Nuclear physics | Radioactivity, nuclear radius, mass-energy equivalence, binding energy, nuclear fission and fusion |
Exam Tip: Paper 2 questions can and do test Year 1 knowledge. For example, a question on electromagnetic induction might require you to apply Ohm's law (Section 3.5) or Newton's second law (Section 3.4). You must revise the full specification for both papers.
Paper 3 is divided into two sections and covers 32% of the A-Level.
This section tests your understanding of practical techniques, data analysis, and experimental design. Questions are based on:
Typical question types include:
| Type | What you need to do |
|---|---|
| Describe a method | State equipment, procedure, variables, and safety precautions |
| Draw a graph | Plot data correctly, draw line of best fit (straight or curved) |
| Calculate uncertainty | Use percentage uncertainty, half-range, or error propagation |
| Evaluate an experiment | Discuss sources of error, reliability, and improvements |
| Analyse given data | Determine a physical quantity from a graph or table of results |
You answer questions on one of the following optional topics:
| Option | Section |
|---|---|
| Astrophysics | 3.9.1 |
| Medical Physics | 3.9.2 |
| Engineering Physics | 3.9.3 |
| Turning Points in Physics | 3.9.4 |
| Electronics | 3.9.5 |
Most schools teach Astrophysics (by far the most popular option). The questions on the optional topic are a mix of short and extended response, and require detailed knowledge of the chosen option.
Exam Tip: You only need to revise ONE optional topic. Make sure you know which option your school has taught and focus your revision accordingly.
AQA provides a data and formulae booklet in the exam. Understanding what is in it — and what is not — is critical for efficient revision.
The booklet contains:
| Topic | Formulae Provided |
|---|---|
| Mechanics | s = ut + ½at², v² = u² + 2as |
| Materials | E = (Fl)/(Ax) — Young modulus rearranged |
| Waves | Diffraction grating: d sin θ = nλ |
| Electricity | Resistivity: ρ = RA/L |
| Circular motion | a = v²/r, a = omega²r, F = mv²/r |
| SHM | T = 2pi sqrt(m/k), T = 2pi sqrt(l/g), x = A cos(omega t), v = ±omega sqrt(A² - x²) |
| Thermal | pV = NkT, E = (3/2)kT |
| Gravitational fields | g = -GM/r², V_grav = -GM/r, T² = (4pi²/GM)r³ |
| Electric fields | E = Q/(4pi epsilon_0 r²), V = Q/(4pi epsilon_0 r) |
| Capacitance | Q = Q_0 e^(-t/RC), time constant = RC |
| Magnetic fields | F = BIl, F = BQv, phi = BA, emf = -N dphi/dt |
| Nuclear | Activity A = lambda N, N = N_0 e^(-lambda t), t_half = ln2/lambda |
| Astrophysics | L = 4pi sigma r² T⁴, lambda_max T = 2.898 x 10⁻³ m K |
These important equations are NOT on the data sheet and must be memorised:
| Topic | Equation |
|---|---|
| Mechanics | v = u + at |
| Mechanics | s = ½(u + v)t |
| Mechanics | W = Fs cos theta |
| Mechanics | Ek = ½mv² |
| Mechanics | Ep = mgh |
| Mechanics | P = Fv |
| Momentum | p = mv, impulse = F delta t |
| Hooke's law | F = kx, E = ½kx² |
| Electricity | V = IR, P = IV, P = I²R, P = V²/R |
| Electricity | Q = It |
| Electricity | EMF: epsilon = I(R + r) |
| Electricity | Potential divider: V_out = R_2/(R_1 + R_2) x V_in |
| Waves | v = f lambda, c = f lambda |
| Waves | n = c/v (refractive index) |
| Photoelectric | hf = phi + Ek_max |
| de Broglie | lambda = h/p = h/(mv) |
| Circular motion | v = omega r, omega = 2pi/T |
| SHM | a = -omega² x |
| Energy in SHM | E = ½m omega² A² |
| Ideal gas | pV = nRT |
| Capacitance | C = Q/V, E = ½QV = ½CV² |
| Nuclear | E = mc² |
| Radioactive | Half-life: t_half = ln2/lambda |
Exam Tip: In the exam, you are allowed to use any equation from the data booklet — but you must be able to select the correct one. Practise identifying which equation to use for each type of problem.
AQA uses specific command words, and understanding them is crucial for giving the examiner what they want.
| Command Word | What It Means | Typical Marks |
|---|---|---|
| State | Give a brief, factual answer with no explanation | 1 |
| Define | Give the precise meaning of a term | 1-2 |
| Calculate | Use numbers to work out an answer — show your working | 2-4 |
| Determine | Use given data and physics to find a quantity | 2-4 |
| Show that | Demonstrate a given result with clear working — the answer is given | 2-3 |
| Explain | Give reasons using physics principles | 2-4 |
| Describe | Say what happens, step by step | 2-3 |
| Suggest | Apply physics to an unfamiliar context — there may not be one "right" answer | 1-3 |
| Discuss | Present multiple viewpoints, weigh evidence, reach a conclusion | 4-6 |
| Evaluate | Judge the quality of evidence or an argument, and reach a reasoned conclusion | 4-6 |
| Sketch | Draw a graph showing the correct shape and key features (labels, intercepts, asymptotes) | 2-3 |
| Compare | Identify similarities and/or differences | 2-3 |
| Justify | Give reasons for your answer | 1-2 |
| Derive | Show how a given equation is obtained from other equations | 2-4 |
Exam Tip: For "show that" questions, you must clearly show every step of your working even though the answer is given. The marks are awarded for the method, not the final answer. Present your solution so the examiner can follow your reasoning.
AQA A-Level Physics marks are allocated across three assessment objectives:
| Assessment Objective | Description | Weighting |
|---|---|---|
| AO1 | Demonstrate knowledge and understanding of scientific ideas, processes, techniques, and procedures | 30-34% |
| AO2 | Apply knowledge and understanding of scientific ideas, processes, techniques, and procedures in a theoretical context, in a practical context, when handling qualitative data, and when handling quantitative data | 40-44% |
| AO3 | Analyse, interpret, and evaluate scientific information, ideas, and evidence, including in relation to issues, to make judgements and reach conclusions, and to develop and refine practical design and procedures | 25-28% |
| Paper | AO1 | AO2 | AO3 |
|---|---|---|---|
| Paper 1 | ~28 marks | ~38 marks | ~19 marks |
| Paper 2 | ~28 marks | ~38 marks | ~19 marks |
| Paper 3 | ~20 marks | ~18 marks | ~42 marks |
Paper 3 has the heaviest AO3 weighting because of the practical skills and data analysis section. This means Paper 3 rewards higher-order thinking: analysing data, evaluating methods, and making justified conclusions.
Exam Tip: AO2 (application) carries the highest overall weighting. This means most marks are awarded for applying your knowledge to solve problems, not just for recall. Practise applying equations and principles to unfamiliar situations.
Extended response questions (typically worth 6 marks) appear on all three papers. They are indicated by an asterisk (*) on the paper.
Extended responses use a levels of response marking scheme rather than a point-by-point mark scheme:
| Level | Marks | Descriptor |
|---|---|---|
| Level 3 | 5-6 | A detailed, coherent answer with correct physics throughout. Logical structure. All key points addressed. |
| Level 2 | 3-4 | A reasonable attempt with mostly correct physics. Some gaps or lack of detail. Structure could be improved. |
| Level 1 | 1-2 | Limited physics knowledge shown. Significant errors or omissions. Poor structure. |
| Level 0 | 0 | No relevant physics content. |
flowchart TD
A["Read the question carefully"] --> B["Identify the physics topic"]
B --> C["Plan your answer<br/>(30-60 seconds)"]
C --> D["Write in paragraphs,<br/>not bullet points"]
D --> E["Use correct terminology<br/>and equations where relevant"]
E --> F["Address ALL parts<br/>of the question"]
F --> G["Include a conclusion<br/>if asked to discuss/evaluate"]
G --> H["Reread to check<br/>logic and accuracy"]
Question: Discuss whether the use of nuclear fission to generate electricity is justified. (6 marks)
A high-level answer would include:
Arguments for:
Arguments against:
Conclusion:
Exam Tip: Always plan your extended response before writing. List 3-4 key points, decide on a structure, and ensure you answer the specific question asked. A well-structured answer with correct physics will reach Level 3 even if it is concise.
| Paper | Total Time | Total Marks | Time per Mark |
|---|---|---|---|
| Paper 1 | 120 min | 85 | ~1.4 min/mark |
| Paper 2 | 120 min | 85 | ~1.4 min/mark |
| Paper 3 | 120 min | 80 | ~1.5 min/mark |
| Key Point | Detail |
|---|---|
| Three papers | Paper 1 (34%), Paper 2 (34%), Paper 3 (32%) |
| Paper 1 | Sections 1-5 + Periodic Motion, includes comprehension |
| Paper 2 | Sections 6.2-8, can draw on Year 1 knowledge |
| Paper 3 | Section A practical skills (45 marks) + Section B optional topic (35 marks) |
| Data booklet | Many formulae given — but key equations must be memorised |
| Command words | Each has a specific meaning — respond accordingly |
| Assessment objectives | AO1 (knowledge), AO2 (application), AO3 (analysis) |
| Extended responses | Levels-based marking; plan, structure, conclude |
| Time management | ~1.4-1.5 min per mark; do not overspend on any one question |