But when the tragic incident occurs between those who are near or dear to one another--if, for example, a brother kills, or intends to kill, a brother, a son his father, a mother her son, a son his mother, or any other deed of the kind is done---these are the situations to be looked for by the poet.
When water is heated it expands. For example, water heated from 90Â°F to a thermostat setting of 140Â°F in a 40 gallon hot water heater will expand by almost one-half gallon.
water does expand when it freezes because water is polar and so pushing the molecules close together actually makes them feel a force of repulsion, hence they move apart, so it expands. In general, materials expand when heated and contract when cooled...you are trying to apply the logic that if water expands when its cooled then it must contract when heated...but this is only true between the liquid and solid states. If you heat water to be a gas (steam) then it expands just like normal materials do when heated. When heated you put more energy into the atoms so if you put them in a box it will push harder against that box (which you see as pressure) or if you allow the box to expand then it will to equalize the pressure (i.e. expanding makes the pressure less).