Turn an investigation question into measurements
A useful experimental plan states what changes, what is measured and what is controlled. The apparatus must resolve the changes the investigation is intended to detect.
Follow the reasoning
- Identify the independent and dependent variables.
- Choose suitable instruments, ranges and controls.
- Specify a table with quantities, units and repeat readings.
Try it in a past paper 5
Open the question, then use its mark scheme to check your work.
Question 22
Evaluate a refractive-index identification and describe an accurate critical-angle measurement.
Question 4(b)
Design a potentiometer experiment to compare cell e.m.f.s.
Question 2
Plan and analyse an experiment linking terminal speed to ball diameter.
Question 2
Plan a light-gate trolley experiment and analyse a linearised speed–mass graph.
Show 1 more paper references
Question 2
Design and analyse an experiment comparing a lifting motor’s electrical input with its useful mechanical output.
A curated collection checked against the question papers and mark schemes; not a complete past-paper catalogue. Links open official OCR PDFs in a new tab.
Put the ideas to work
More practice is on its way
No PhysicsUK question linked yet. New eligible questions appear here as the bank grows.
Specification outcomes (6)
- 1.1.1(a) Experimental design, including to solve problems set in a practical context.
- 1.1.1(b) Identification of variables that must be controlled, where appropriate.
- 1.1.1(c) Evaluation that an experimental method is appropriate to meet the expected outcomes.
- 1.1.2(a) How to use a wide range of practical apparatus and techniques correctly.
- 1.1.2(b) Appropriate units for measurements.
- 1.1.2(c) Presenting observations and data in an appropriate format.