Hands-on learning awaits...

Water is all around us in the ground, in the air, and even in our bodies! Even though it is so important in our lives, we do not often know a lot about it! For another fun experiment you can do at home, grab two pitchers of water, one cold and one hot, and examine the ways that they interact!

What You’ll Need:

  • 2 pitchers
    • 1 with cold water
    • 1 with hot water
  • 2 water glasses
  • Red food coloring
  • Blue food coloring
  • 1 baking pan
  • 1 plastic card

The Science Behind It:

First off, the reason your plastic card remains connected with your water glasses, is all because of air pressure! Since the air pressure on the bottom of the card is greater than the weight of the water pressing down on it, the card stays!

In terms of the mixing? Cold water on the top mixes with warm water, while warm water on the top does not mix with cold water. This is because warm water is less dense than cold water, so it wants to rise, something it does not have to do when on top!