CONDUCTIONGood conductors: Copper Heating
appliances, boilers, (Davy) safety lamps, fire tubes in steam engines, tip of soldering
iron
Aluminium Cooking utensils
Iron Shaped into fins to give a large
surface area for cooling in air-cooled engines
Bad conductors:
Felt, glass fibre Lining of roofs, lagging to pipes and boilers (i.e. heat
insulation)
Asbestos Lining of roofs, lagging to pipes and boilers, protective clothing,
radiators
Paper Wrapping such as fish and chips
Plastic Handles to cooking utensils
Wood Handles to cooking utensils, wooden spoons, table mats
Cork Table mats
Straw Roofing (thatch), hay-box used in camping
Glass, porcelain Crockery (little heat transfer to hands and lips)
Fat In the skin and around organs of animals and humans
Bricks, plaster Housing
Air Woollen clothing (fibres of wool have many air spaces), feathers,
fur, eiderdowns, string vests, cellular blankets, cavity walls, double
glazing
Vermiculite Insulation
The photo shows some of the insulating tiles on the Apolllo 10 command module.
A VERSION IN WORD IS AVAILABLE ON THE SCHOOLPHYSICS USB