Part B: Non-rotating channel tank This first simulation uses a channel tank. This channel tank is a clear plastic, rectangular box that is 90 cm (35 inches) long. This tank is filled with water 12 cm (5 inches) deep. Saltwater with a density of 1.05 grams/cm3 is dyed blue and placed in a closed container at one end. This saltwater simulates the cold, denser air near the poles. Water with alcohol having a density of 0.98 grams/cm3 is dyed yellow and placed in a closed container at the other end. This alcohol-water simulates the warm, less dense air near the equator. Both of these containers are removed at the same time to release their contents into the tank. This photo illustrates the experiment setup.Why did the blue water sink to the bottom