This experiment demonstrates how water at different temperatures has different densities, creating beautiful layering effects. You'll see how warm and cold water interact and learn about density ...

In the hot (yellow) water, the water molecules are slightly further apart than in the cold (blue) water. The hot water is less dense and floats on the cold water. When the cold water is placed on top, ...

There appears to be very little mixing where the hot and cold water meet. What do you think would happen if you switched the jars around? Try the experiment again but this time, first place the jar ...

But for a bit of an experiment, I set out to determine which washing temperature is the perfect one for bath towels, hot or ...