Your students will oohh and ahh when they do this lab! And! It’s integrated, so it includes many concepts! Mainly energy, weather and climate change. First students place colder, denser water on top of warmer, less dense water. They see conduction, convection and energy transfer happen. They can see the water molecules mix, move and the color change.Then students place the warmer, less dense water on top of the colder water and they don't mix! They don’t mix because of density and it will stay t