Density and Temperature Demonstration September 7, 2013

This demonstration was to show the difference in density between warm and cold water. There were four glasses; two with red water (warm) an two with blue water (cold). We placed one red water on a blue water and a deferent blue water on the other red water as you can see in the "before" picture on the left. The picture on the right shows what happened afterward: When the red was put onto the blue, the red stayed on top because warm water is less dense than cold water. For that same reason, when blue was placed on red the red tried to rise to the top as the blue attempted to sink to the bottom creating the purple you see. In connection with this demonstration, the lake is just like the red, warm water on top of the blue, cold water. The lake water is much warmer on top than toward the bottom.