Yesterday was the winter solstice, so that means here in the northern hemisphere daylight will eke out a tiny bit more time everyday. Perhaps paradoxically, that also means that the temperatures will stay lower and snow will begin to accumulate in the northern climes if it hasn’t already.
Southeast Michigan has had some cold days and nights and about four inches of snow in my neighborhood, though it’s down to about one on the ground due to the rain from the last two days.
This month’s challenge is about solid water aka snow. If you live far enough north (or south) you should see some falling during the winter months.
Water in itself is a fascinating substance. When H2o molecules bond, they form 105 degree bonds which allows for quite a bit of molecular space. What does that mean? Simply put, solid water is less dense than liquid water–hence ice floats. Check it out the next time you put ice in your beverage.
For snow to form you need two things: atmospheric moisture and temperatures close to freezing. I guess some people have said that it can be too cold to snow, but that’s nonsense. As long as there’s enough moisture in the air, snow can form.
Most snowflakes are less than a 1/2″ across but some can be as large as two inches (I always called the larger, fluffier flakes “goose feathers”).
Snow is white because the way that the ice crystals form there is a relatively large amount of surface area to reflect sunlight and visible sunlight is white. However, in glaciers, blue is a prominent color, and in deep snow too.
When you go outside to explore the snow this month pay attention to your voice and other sounds. Snow absorbs sound, so your backyard and neighborhood will have a different aural quality if enough snow falls.
As I’m reading The Long Winter by Laura Ingalls Wilder to my eleven-year-old daughter currently, I learned that a blizzard, which engulfed the town the Ingalls lived in, by definition is a heavy, blowing snowfall that lasts for at least three hours. The Ingalls and neighbors endured three days of blizzard sometime in the late 19th century.
If, in your travels in the winter, you happen to get stranded or lost, dig yourself a hole in the snow. Snow happens to be a good insulator and the layer closest to the ground is usually around 32 degrees, which is still cold, but it could be warmer than the 25, 18, or 3 degrees above the snow pack.
Another wonderful thing about winter is the ease in tracking animals. The nature of snow allows for evidence of birds and mammals to be left behind for you to follow or attempt to investigate what kinds have been around.
So, ignore the cold (safely), play in the snow. Track animals, build a snow cave, pack a snowball. Go outside.