Temperature or hotness.—Sensation not reliable guide.
Expansion.—Experiments to show in solids, liquids, gases. A few exceptions to law of expansion, e.g., water near freezing-point, ice forms on top of water. Force of expansion.
Thermometers.—Construction and graduation.
Fusion.—Temperature remains constant during fusion. Latent heat.
Evaporation and boiling.—Latent heat of vaporisation.
Boiling point depends on pressure.—Experiment of boiling water under air-pump.
Conduction.
Convection.—Heating of water in kettle; heating of houses by hot water.
Sound—
Sounding bodies always in vibration.—Bells, tuning-forks, metal plates (vibrations shown by means of sand), strings, etc.