investigations and experiments

Stirring Sand, part 2

In part one, I left you with a challenge. We put a little sand into a glass of water and stirred it. Instead of moving to the outside edge, as we might expect, the sand gathered in the center of the glass. I left you with the challenge of telling me why.

Congratulations! Several of you got the right answer, and several more got it at least partially right.

Why Fry?

This experiment is once again food related. I was preparing our evening meal as I was thinking about possibilities for experiments. As I cooked the turnips, turnip greens, yellow squash, and steamed potatoes, I considered several ideas. Then as I began to cook the hoe cakes, I knew what we would do. Hoe cakes are similar to cornbread. You add hot water to self-rising cornmeal to make a thick batter, which is spooned into a skillet of hot oil and cooked to a golden brown. Topped with some butter, they are delicious. This started me thinking about why we fry food in oil.