Paper 6 asks about experiments you only see on the page: reading instruments, describing a method, naming apparatus and planning a fair test. These pages cover the experiments that keep coming back. In each one, watch the set-up assembled step by step with the variables and the graph beside it, build it yourself on a bench, then check the wording the examiners want.
A rule on a pivot, loads at measured distances, finding the balance point and an unknown mass.
ForcesA spring on a clamp stand, a vertical rule with a set square, loads added, extension found by subtraction.
MotionA bob on a thread between split corks, a fiducial mark, timing 20 oscillations and length to the bob centre.
Thermal physicsA thermometer in a beaker of hot water, readings every 30 s, and lids, insulation or volume compared fairly.
ElectricityA resistance wire, a crocodile clip, an ammeter in series and a voltmeter in parallel, switched off between readings.
LightA transparent block, a normal, pins placed upright and far apart, and angles measured with a protractor.
LightAn illuminated object, a lens and a screen on a metre rule, moving the screen until the image is sharpest.
DensityA balance, a measuring cylinder read at eye level, and the volume of an object by displacement.
We read every 0625 Paper 6 from 2023 to 2025 and grouped the questions by the apparatus they use. Each page is an original experiment in the style of its family, and every step carries what the Cambridge examiner reports said students got wrong.
Next: practise planning in the planning trainer. The experiments and wording on these pages are our own.