1. SALT IN THE OCEANS

2. Composition of sea water

3. Where do the salts come from?
Weathering of rocks
Na, Mg, Ca, K
Underwater volcanic eruptions
Cl, Br, S

4. Salinity Ratio of dissolved substance to the mass of water
%= parts per hundred
0/00= parts per thousand
Seawater averages 35 0/00

5. What can change salinity?
Lowers salinity
Precipitation
Run-off
Melting land or sea ice
Raises salinity
Evaporation
Formation of sea ice

6. Glaciers Growing glaciers ________ salinity
Melting glaciers ________ salinity

7. Salinity

8. Salinity map

9. Dead Sea
Salinity 300 ppt
No life forms

10. Great Salt Lake, Utah Salinity 12 ppt No fish Stinky brine shrimp
Would you want to boat in this?

11. Deep ocean currents