measurement

Feeling the Pressure

This experiment comes from a suggestion made by B. Eschner. It started with his observations as he washed a plastic bag. It developed into a demonstration of water pressure, which then turned into a wonderful explanation of why things float. The more I played with it; the more I liked it. I hope you will have as much fun (and learn as much) as I did.

Drawing Life Sized Dinosaurs

I have loved dinosaurs since I was 4 years old. They lead me to my interest in science, caused me to study geology in college, and lead me to my first job as a geology instructor at the Memphis Pink Palace Museum. They were incredible creatures, ranging in size from tiny to huge. How big were dinosaurs? Here is a way that you can find out.

Big Numbers

This time we will take a look at some big numbers. In the study of science, you will run into all sorts of very large numbers, and it can get to be overwhelming.

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.

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