| NANOTUBE | Tiny conductor of heat or electricity |
| INSULATOR | Substance blocking movement of heat or electricity |
| INSULATION | Material that prevents conduction of heat or electricity (10) |
| SILVER | White, metallic chemical element extremely ductile and malleable, a conductor of heat and electricity and used in the manufacture of coins, jewelry |
| METAL | Solid material, a good conductor of heat and electricity (5) |
| CONDUCTORS | Materials or devices in physics that transmit heat or electricity (10) |
| ENERGY | Power that comes from heat or electricity (6) |
| COOKERY | Preparation of food by means of baking, frying, roasting, steaming or other application of heat; or, a place for practicing said culinary art (7) |
| FUEL | Material burned or used as source as source of heat or power |
| INSULATE | To interpose material that prevents the loss of heat or intrusion of sound (8) |
| SOLAR | Kind of heat or energy |
| INSULANTS | Things that reduce the transmission of heat or sound |
| TEMPERATURE | Paint true to turn for measure of heat or cold |
| RADIANTS | Sources of heat or light |
| SENSOR | Gauge of heat or light, e.g. |
| SWEATY | Showing effects of heat or exercise (6) |
| REGULATE | To adjust the amount of heat or sound as required, control (8) |
| COLD | Absence of heat; or, the sensation caused by said gelidness (4) |
| SUPPLY | Substitute schoolteacher, vicar etc; parliamentary grant for government expenditure; or, a source of water or electricity (6) |
| CURRENTS | Flows, of water or electricity (8) |
