the water is warm & a hot / warm something is a source of heat -> the warm land is a sink of light the warm water is a source of heat  the warm water is a source of heat & a metal lid is put under warm water -> the wood handle is get under a sink of light the metal lid is put under a source of heat  the metal lid is put under a source of heat & if a ergonal insulator / an preposition is exposed to a sink of light then that insulator / that preposition june become hot / warm -> the metal lid will become hot under the warm water the metal lid will become hot under the warm water  the wood handle will become hot under the warm land & if a material is heated , then the material will expand & metal is a kind of material -> the metal lid will expand under the warm water the metal lid will expand under the warm water  the metal lid will expand under the warm water & if the handle of a room expands then that america will be easier to rosebud -> the lid is easier to open because the metal lid expands under the warm water