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.
This experiment is one that you can try the next time you take a bath. Have you ever noticed that you feel cold after a hot bath? Actually, there is more than one reason that you could feel chilled when you get out of the tub. If the water was very warm, then the air will feel cooler by comparison, but even if the water was cool and the air was warm, you could still feel a chill.
There are only two more days before we head for New Zealand. I am looking forward to the farm, the beach, seeing friends, and the food. It will be a LONG flight, but I am even looking forward to that. Most of my packing is done, and I am down to the "what did I forget" stage.
The Water Cycle is one of the major topics students are expected to understand in science. This is because water is such an important resource for food production, industry, and daily life. To help understand how the water cycle works, lets make a working model, using some common, household items.