How water freezes
quadzjr,
Yes, we northerners do go thru the same thing...expansion of water in the radiator.
Interestingly, water exibits almost contradictory physical properties when in the process of freezing...contraction, followed by expansion. It is the second that causes ice (cubes or floes) to float above the water.
When water temp decreases, the water
contracts, becoming more dense/heavier (warmer water is moved to the surface...lighter), and sinks to the bottom, or its point of neutral boyancy. When the water (use fresh, unsalted water as an example) reaches 32 degrees F, it begins to form ice. At this time, it
expands, so that it is now lighter than the water around it, and it floats. The expansion mentioned is that which forces water out of the radiator/glass/pipes, or whatever vessel used to contain the water.
All this is happening at the molecular level, but is seen on the larger scale.
Back to Manny's original question, we used water and wetter. and in the north we use so much AntiFreeze, that we see how slow it is to evaporate when spilled. This means a long time on the track surface when spilled on the race track. Water will be gone in minutes, depending on ambient temperature, and AntiFreeze stays for days. Some tracks demand water as a coolant for that reason.
Good racing,
Bill