Temperature and Density Demonstration

before

What Happened: the blue and red water (left) mixed and the red and blue water (right) sat on top of each other.
Why it happened: (the left example) the cold water is more dense than the hot, so they mixed. (The Right example) The red water is less dense than the blue and so they sat on top of each other.

after

Connection: When fishing, you need to know where the Thermal Cline is so that you know where the fish are. they could either be above or below it depending on what you're fishing for.