1. Mediterranean mystery

3. Ancient sailors knew that the Mediterranean Sea had very strong currents flowing into it from the Black Sea and the Atlantic Ocean.

4. The puzzle was that the water level never seemed to rise even though there was no apparent exit for this excess water. Many theories were introduced including the existence of under water channels.

5. What may be the reasons for these strange currents?
Why does the water level not rise in the Mediterranean?
How would solving this puzzle help the people of the time?

6. 1. What was the current flow that you saw in the lab?
2. From your observations, which was saltier, the Atlantic or the Mediterranean? How can you tell?
3. Why does salinity differ between the bodies of water?