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Exam Board Style Mark Scheme Writer: Structured Physics Questions with M1, A1, B1 Marks, ECF Rules, and Allow or Ignore Notes
Write a structured physics exam question and the mark scheme examiners actually use: method, accuracy, and independent marks, error carried forward rules, allow, ignore, and reject notes, unit penalties, and a worked candidate answer marked against the scheme, so teachers can run mocks that mark consistently across a department.
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Prompt
Act as a senior physics examiner who writes structured questions and mark schemes for 14 to 18 year old exams and trains markers to apply them the same way. Every mark you write can be awarded or withheld from what is on the page, and every alternative answer you allow is written down before marking starts. Inputs: - Specification points and topic to assess: [SpecPoints] - Total marks and number of parts: [MarkTotal] - Assessment objective split (recall, application, analysis): [AOSplit] - Context or scenario for the question: [Scenario] - Equation sheet the candidates receive: [EquationSheet] - Department marking conventions (significant figures, unit penalty, ecf policy): [MarkingConventions] - Output format: [Format] Generate: 1. The question: stem with the Scenario, numbered parts with mark allocations in brackets, command words (state, calculate, explain, evaluate) matched to AOSplit, and data in SI units. 2. Mark scheme table per part with columns Answer, Marks, Guidance. Use M1 for a method mark, A1 for an accuracy mark that depends on the preceding M mark, B1 for an independent mark, and C1 for a compensatory mark given when the final answer is wrong but a correct intermediate value appears. 3. Guidance notes in examiner language: allow (acceptable alternatives), ignore (extra correct or neutral working), reject (wrong or contradictory answers), cao (correct answer only), owtte (or words to that effect), and ecf (error carried forward from a named earlier part, with the exact rule). 4. For each explain question, a list of creditworthy points with the maximum marks and the minimum wording that earns each point. 5. A worked candidate answer with one deliberate slip, marked line by line against the scheme, showing how ecf and the unit penalty from MarkingConventions are applied. 6. Standardisation notes: the two marking disagreements you expect most and how markers should resolve them. Constraints: - Every number in the scheme must follow from the Scenario data; show the working. - Do not copy wording from real past papers; write original questions in the board style. - No em dashes.
Instructions
Replace every [bracket] with your details before running. Works on ChatGPT, Claude, and Gemini.
Generated Output
This image was generated using the prompt above.
Examples
Example Input
SpecPoints: kinetic energy, work done equals force times distance, braking distance factors MarkTotal: 9 marks in 3 parts AOSplit: 2 recall, 5 application, 2 analysis Scenario: a 1200 kg car travelling at 15 m/s brakes to rest on a dry road EquationSheet: KE = 1/2 m v^2, W = F s MarkingConventions: final answers to 2 or 3 significant figures; one unit penalty per paper; ecf allowed between parts Format: question then mark scheme table
Example Output
Question 4 A car of mass 1200 kg is travelling at 15 m/s on a dry road. The driver brakes and the car comes to rest. (a) Calculate the kinetic energy of the car before braking. [3] (b) The braking force is 6000 N. Calculate the braking distance. [3] (c) Explain why the braking distance would be greater on a wet road. [3] Mark scheme (a) | Answer | Marks | Guidance | KE = 1/2 x 1200 x 15^2 | M1 | substitution into KE = 1/2 m v^2; allow 0.5 x 1200 x 225 | | = 135 000 | A1 | dependent on M1; allow 1.35 x 10^5; allow 135 kJ with correct prefix | | J | B1 | independent unit mark; ignore case (j); reject N or W | (b) | Answer | Marks | Guidance | W = KE so F s = 135 000 | M1 | recognition that work done by brakes equals KE lost; ecf from (a) | | s = 135 000 / 6000 | M1 | rearrangement; ecf from (a) | | = 22.5 m | A1 | allow 22 or 23 m (2 sf); ecf: candidate's (a) value divided by 6000 earns A1 | C1: if final answer is wrong but 135 000 = 6000 x s appears, award 1 mark max for part (b). (c) Creditworthy points, any three for 3 marks: - less friction between tyres and road (owtte: less grip) [1] - so the braking force that can be applied without skidding is smaller [1] - same kinetic energy must be transferred, so a smaller force needs a larger distance (W = F s) [1] - tyres may skid or aquaplane, reducing braking force further [1] Ignore: references to thinking distance or driver reaction time (not braking distance). Reject: "the road is slippery" with no reference to friction or grip, for the first point. Worked candidate answer, marked (a) KE = 1/2 x 1200 x 15 = 9000 J Marker: M0 (speed not squared), A0, B1 for J. Total 1/3. (b) 9000 = 6000 x s, s = 1.5 m Marker: M1 ecf (work equals KE using their 9000), M1 ecf rearrangement, A1 ecf 1.5 m. Total 3/3. (c) "The wet road has less friction so the brakes can't stop the car as quickly so it goes further." Marker: point 1 (less friction) 1 mark; "can't stop as quickly" earns point 2 owtte only if the team agrees at standardisation; distance link without W = F s reasoning: 0. Total 1 or 2/3. Unit penalty: none applied; units present. Standardisation notes 1. Part (c) point 2: agree in advance whether "brakes less effective" counts as smaller braking force. Recommended: allow only with a reference to grip or skidding. 2. Part (b) ecf with an unreasonable (a) value: award ecf marks even when the distance is physically silly, but never award A1 for 22.5 m copied without working if (a) was wrong.