mass

Snow Rollers

I recently presented a session on teaching electricity at the Utah Science Teachers Association Conference. On my way home, I did quite a bit of photography of the snowy landscape, but one roadside slope caught my eye. Driving past, I saw something that I had only seen in books, and a few recent weather articles. Snow rollers! They are usually quite rare, and of the hundreds of snowy road cuts that I passed on the drive home, this was the only one that had them.

Air has Weight

This experiment comes from a question sent to me a homeschooling mom named Elaine. It is based on a "classic" experiment often seen in textbooks to show that air has weight. While it starts simple, it takes some twists along the way that often cause people to misunderstand what is actually happening.

Newton's Third Law of Motion

This experiment comes from my hotel room. I was traveling do some consulting for a science museum, and was sitting at the desk, thinking of ideas for experiments. As I sat, I swiveled back and forth in the chair. As I swung back and forth, I decided that it would make an interesting experiment.

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