Because when water freezes it expands thus bursting the pipes.
Yes, they can
The water in your pipes will freeze, and then burst!
Anomalous expansion of water and bursting of water pipes during winter is because ice takes more space than water
If you didn't, they could freeze in the winter and burst.
If you don't insulate water pipes or protect them in some way from the cold, the water inside the pipes can freeze. This causes you to be without water until the pipes warm up enough to thaw. Also, when the water freezes, it can expand and burst the pipes which will then need to be replaced. Save yourself the aggravation of having no water and the cost of replacing pipes by insulating them. To protect pipes in an empty or unused building, you can pour anti-freeze down all drains and in the toilet to winterize them.
The water inside uninsulated pipes may freeze and expand during a cold winter, pushing opening joints or splitting the pipes, often unnoticed. When the thaw comes, the ice in the pipes melt, and the water pressure returns, and the water is able to spray out through the damaged pipes.
Becuase when water freezes, it expands and burst the pipe from the inside.
No
Water freezes at 0 deg C. As the water freezes in the pipes, it expands and it is the force of expansion which causes the pipes to burst.
You gave the answer in the last part - you don't want them to freeze and burst during winter.
Water expands when turning to ice (which is why water pipes can burst in winter). So the difference is in volume (size).
A plumber is a tradesman (or woman) who mends burst water pipes.