Ocean Currents Experiment

This experiment models how the ocean currents work. All you need is 2 glass jars the same size, some pieces of card, salt, food colouring and a plastic tray. What happens, well, when the salt water was placed on top, the water in the two jars mixed together. This is because salt water is denser (heavier) than freshwater. This partly simulates how the worlds ocean currents operate! By Ella