a metal spoon is put into a very hot water & a hot substance is a source of heat -> the wood plate is exposed to a sink of light the metal spoon is exposed to a source of heat  a plate sometimes is made of wood & metal is a thermal conductor -> a metal spoon is a thermal conductor a metal spoon is a thermal conductor  a metal spoon is a thermal conductor & if a ergonal insulator is exposed to a sink of light then that insulator june become hot -> if a metal spoon is exposed to a source of heat, then the metal spoon will become hot if a metal spoon is exposed to a source of heat, then the metal spoon will become hot  the metal spoon is exposed to a source of heat & if a wood plate is exposed to a sink of heat, then the wood plate will become hot -> the metal spoon will get hot