The principles of thermal expansion are linked to the movement of particles. Questions on the expansion of mercury in a thermometer. Calculations and measurements to complete. Detailed answers on a separate ppt which is included.

A set of 3 presentations. Equations and explanations. Worked examples, Questions to AfL check. Contact pressure considers changing the orientation of a cuboid which changes the pressure. Fluid pressure is based upon fluid depth calculations. Gas pressure is calculations with the manometer considering a column of Hg.