1. What Causes Surface Currents?

13.2 Questions 8. What are two causes of currents in the ocean?

1. What causes surface currents? 9. How do currents distribute heat around the globe?

2. Look at the map on page 437. Which currents could be used for sailing east across the Atlantic ocean? 10. How are climate and weather related to currents? Give two examples.

3. What do surface currents carry away from the equator? 11. Describe at least two ways in which upwelled water might differ from the water around it.

4. In what direction do deep currents move? 12. What factor do you think might cause a surface current to change direction?

5. In what direction does water move in upwelling?

13. What would happen if all ocean currents suddenly came to a halt? Describe some effects this change would have. 6. How does the gulf stream affect Great Britain?

14. Look at the picture on page 440. Answer the reading visuals question 7. What kind of current is the Gulf Stream? below the image.