1. Deep Ocean Currents

2. Surface Currents: Gyres

3. Deep Ocean Currents
Form due to a difference in temperature and salinity around the globe.

4. What does a difference in temperature cause a change in?

5. What causes changes in salinity?

6. Salinity and Density Density = m/v Increase salinity, increase density
Brackish= freshwater, salt water mix
Hypersaline= water with high amounts of salt

7. Sketch a prediction of what you think will happen.

8. On a separate sheet of paper answer the following questions in complete sentences (or write the question and then the answer; your choice).

9. Marine Biology Text: Ocean Currents Questions
1) What causes the ocean to be layered or stratified? 2) Briefly describe the three layers of the ocean. Include depth, temperature and any important feature in the layer. 3) Describe the process known as overturn (be sure you discuss downwelling). 4) What are the processes that change (increase/ decrease) salinity in the ocean? 5) What are the processes that change temperature in the ocean? 6) What is thermohaline circulation? 7) Where in the ocean does water sink all the way to the bottom? 8) What is the great ocean conveyor and why is the great ocean conveyor important?