Modelová Otázka ID 3372 - 
Nejvyšší tepelnou vodivost z uvedených látek má:
Správná odpověď je: A
Vzduch s průměrnou tepelnou vodivostí ±0,03 W · m–1 · K–1 je velmi dobrý tepelný izolant, čehož je dobře využito například u klasického kalorimetru. Tepelná vodivost dřeva závisí na druhu stromu a na řadě dalších parametrů, obvykle je ale maximálně o řád vyšší než tepelná vodivost vzduchu. Kovy jsou velmi dobré vodiče tepla, přičemž nejlepšími tepelnými vodiči jsou z běžných kovů (v tomto pořadí) stříbro, měď, zlato a hliník. Tepelná vodivost železa je asi 5× nižší než tepelná vodivost stříbra.
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