This week's Photo Hunters Theme is water.
My kids love to drink water, look at it (in the form of fountains, waterfalls, the sea, etc..), play with it, play in it. But they have never found water so fascinating as when we did the experiment above.
Just fill a pitcher with ice-cold water, and fill a small narrow-necked bottle with hot water that has been tinted with food coloring. Tie a string around the small bottle's neck so you can lower it into the pitcher. Lower it carefully and watch the warmer water rise to the top.
They really enjoyed watching their underwater "volcano" erupt!