GCSE Physics resources
AQA GCSE Physics exam skills
Most calculation marks come from choosing the model, converting units, substituting correctly and checking whether the answer makes physical sense.
Start here
Most calculation marks come from choosing the model, converting units, substituting correctly and checking whether the answer makes physical sense.
Before you revise
Choose an answer from memory. Your result tells you what to watch for in the guide.
Core revision guide
GCSE Physics Equations and Maths Skills questions become manageable when the central model, evidence and exam method are kept together. Read the explanation, test the misconception and then apply the idea without looking back.
Most calculation marks come from choosing the model, converting units, substituting correctly and checking whether the answer makes physical sense. Use the focused resources below to apply the equations and maths skills ideas in exam-style contexts.
Treat units as part of the calculation. Convert prefixes before substituting, write the equation and rearrangement clearly, then check that the final unit fits the quantity. A number without a unit, or compatible-looking numbers with incompatible units, loses otherwise available marks.
Misconception clinic
Read each belief, say what is wrong with it, then compare your correction.
Tempting idea: Using centimetres or grams without conversion.
Use instead: Most calculation marks come from choosing the model, converting units, substituting correctly and checking whether the answer makes physical sense.
Tempting idea: Squaring the wrong quantity.
Use instead: Treat units as part of the calculation. Convert prefixes before substituting, write the equation and rearrangement clearly, then check that the final unit fits the quantity. A number without a unit, or compatible-looking numbers with incompatible units, loses otherwise available marks.
Tempting idea: Rounding too early.
Use instead: Write the equation before substituting, rearrange it symbolically, convert to compatible units and finish with a unit and sense check.
Retrieval practice
Worked examples
These examples expose the difference between a secure select, rearrange and check a physics equation method and the common error “Using centimetres or grams without conversion.”.
3 500 J.
t = E ÷ P.
Check that v² was used; the correct value is 9 J.
Exam precision
Do this: Write the equation before substituting, rearrange it symbolically, convert to compatible units and finish with a unit and sense check.
Independent practice
Write an answer before opening the marking guidance. Then edit the exact phrase or step that would gain the next mark.
Marking guidance: 2 marks are available for relevant, linked physics points that match the model answer.
Model answer: 250 W.
Marking guidance: Award one mark for the precise statement shown in the model answer.
Model answer: They identify the physical quantity and show the result is expressed in a meaningful form.
Marking guidance: 2 marks are available for relevant, linked physics points that match the model answer.
Model answer: Identify the quantity requested and the physical relationship that links it to the given values.
Marking guidance: Award one mark for the precise statement shown in the model answer.
Model answer: A unit prefix may not have been converted, the equation may be wrong or a value may have been entered incorrectly.
Marking guidance: 2 marks are available for relevant, linked physics points that match the model answer.
Model answer: 0.0049, or 4.9 × 10⁻³.
Marking guidance: 2 marks are available for relevant, linked physics points that match the model answer.
Model answer: Early rounding can change the final answer unnecessarily.
Questions pupils ask
Most calculation marks come from choosing the model, converting units, substituting correctly and checking whether the answer makes physical sense.
Using centimetres or grams without conversion. Treat units as part of the calculation. Convert prefixes before substituting, write the equation and rearrangement clearly, then check that the final unit fits the quantity. A number without a unit, or compatible-looking numbers with incompatible units, loses otherwise available marks.
Useful next steps