sentences: if one object touches something then one is exposed to that something & a metal spoon is touching the pan -> the wood plate is exposed to the pot the metal spoon is exposed to the pan  the metal spoon is exposed to the pan & the pan 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 spoon sometimes is made of metal & wood is a ergonal insulator -> a spoon is a kind of thermal conductor a spoon is a kind of thermal conductor  a plate is a mean of ergonal insulator & if a thermal conductor is exposed to a source of heat then that conductor may become hot / warm -> if a spoon is exposed to a source of heat, then the conductor may become hot if a spoon is exposed to a source of heat, then the conductor may become hot  the wood plate is exposed to a sink of light & if a spoon is exposed to a source of heat, then the conductor may become hot -> the metal spoon will become home