What happens when cold water meets hot water? Does the temperature of the water matter? Could water temperature affect the water's currents in large rivers and lakes? How about its effect on marine life?

Let's find out!

1. Fill the pan halfway with hot tap water. Let the water settle down and be careful not to bump the pan or table/desk on which it sits.

2. Put one-third cup of water, 6 drops of food coloring, and the ice cubes in one measuring cup. Stir for a few minutes so that the water gets very cold.

3. Put the funnel in one corner of the pan so that the tip of the funnel touches the bottom of the pan.

4. Slowly drip the water into the funnel. Observe what happens.

5. Research on the Internet just what effect water's temperature can have on the water's currents and existing marine life.

Now that you have observed what happens when cold meets hot water in rivers, tell about the effect of water temperature on currents and marine life. Write a one-page paper from the point of view of "Corey the Crayfish." Tell your story as you see and feel it.