Why do pipes carrying water often burst in cold countries during winter?
549327
Freezing water expands.
659124
Lots of reasons.  It depends on the air temperature and moisture content, the area that the water evaporates from, local geography (like mountains and lakes) as well as the composition of the cloud (water or ice crystals).
973898
That is a fantastic question.\nIt is a matter of humidity. The cold weather\nthat allows snow means the air is not humid\nenough to allow an electric current to travel\n(along the water vapor in the air) over the differently\ncharged clouds and sky. People who say temp are\nsort of right, but it is the low temp that leads to the low\nhumidity that causes the "problem".\n\nThanks for asking such a good question.
415970
I don't have a scientific answer for you, except to say that's just how it works. You could say it's the same reason that water expands when it freezes, as opposed to almost everything else which contracts.
50088
During the winter, the air is colder, but the ground (at least deep down) stays pretty much the same temperature.  Therefore, in a lake, the cold is coming from the top.  This usually freezes the top layer of the lake, which also shields the lower part from freezing - it is now insulated from the weather.  It is very important that ice floats over water, because this allows the ice to make a separation and enables the fish and wotnot to survive the winter.
218041
It is quite true that soil temperatures where the living parts of the plants are during winter are not as cold as the surface temperature. That is the first fact. The second thing that comes into play is that plants produce chemicals that depress the freezing point of water and prevent ice crystals from forming and rupturing cell walls. The next factor is that many plants forms seeds or spores that are biologically inactive when conditions are not suitable for growth. This is sort of a suspended animation. It is also important to recall that plants even as large as trees have only a very small proportion of actual "living material." In a tree in winter, the cambium and rootas are "alive" The cambium goes inactive and reactivates when spring comes and the roots remain fairly dormant through winter until warming weather stimulates the cambium back to life and the roots then beginning sending sap up the tree. The question is complex as plants vary from one celled organisms to trees.
150789
I think yes, definately! I work on Alaska's North Slope and I know that sound absolutely travels better at extremely cold temperatures. When it is minus 40 or 50 F you can hear vehicles coming from a much greater distance for example. Can't say why exactly. Maybe because the molecules in the air are closer together (condensed) and therefore transmit sound more efficiently (like water).
830114
Not likely the cold temperature, more likely the dry air we encounter in the winter.  We don't tear as well and therefore our eyes get irritated more easily.
7352
Because ice builds up on the power lines and breaks them, causing a loss of power to the people serviced by that line. Or tree branches/whole trees fall on a power line due to the weight of the ice, or a car slides on the road into a hydro pole.. Anyways, reasons like that.
99485
no. because something could be steaming when it is cold.
456301
Air is more dense when cold.
605807
Yes,it is a fact that it is cold at the poles where it practically snows all the time,but in the US temperatures don't drop that low.\nPeople say that-"it is too cold to snow" , because in this case the temperature is too low(for our geographical positioning) to "hold" water in the air which prevents it from snowing.\nHope that my answer has been useful!
1163536
The definition of freezing is that they reach 0C, not that they turn to a solid, that is a separate step.  Hot water pipes and cold water pipes, both in an identical freezing environment will cool down at different rates because the higher the temperature gradient or difference, the faster the rate of cooling.  So hot water will cool faster to 0 than cold water, although cold water will form ice faster since overall it requires less heat overall to be removed to freeze.\nNote that practically the hot pipe will take longer to freeze solid since there simply needs to be more energy removed to get the solid.  This question is normally asked theoretically to demonstrate (or trick a student) to teach the lesson about how larger temperature gradient have a higher cooling speed relative to the lower temperature gradient.  It depends on the reason for asking this question.\n\nNote that the Mpemba effect, while it has been observed, is only under specific experimental conditions and is far from a general phenomenon and not general enough to effect the average set of pipes in the average house basement.
922344
I believe that it is becuase since it is cold outside, people tend to stay in more, allowing for easy spreading of viruses.\n\nDon't quote me on it\n\n\nR
412067
im not sure what u mean by elements. but when a cold front passes warm air is cooled. warm air is able to hold more water than cold thus when it cools it releases it water in droplet form or rain. ussually since cold is heavier the liquid rain with is higher than the cold goes through the cold air and crystalizes and falls as snow. it the cooling effect is too fast ant the droplets fuse and fuse until their weight makes them fall as hail.
155061
The temperature must drop below freezing up in the atmosphere,  where there is a concentration of water vapor. Typically this is caused when a warm front (full of water) rolls over a cold front -- the drop in temperature condenses the water high up and it drops to the ground as snow. But it can also happen when a cold front moves over a lake (ie. lake-effect snow). This is seen in a place like Buffalo.
1159452
mainly to do with temperature and climate in various parts of the world be unable to sustain a  natural water supply