1. Refer to your plotted points on the map for each of the bottles. What are the names of the niajor surface currents each bottle could have followed? 2. Based on your knowledge of ocean currents, where did each bottle originate?

3. Is it possible the bottles could have followed different currents? If so, what were the other possible onginations for each bottle?

4. What kinds of factors could hinder the forward progress of a message in a bottle in an ocean current? What factors could aid the movement?

5. In the lesson, you learned about a debris convergence zone, or "garbage patch," that can form in the center of the Pacific Ocean. How is the formation of this patch related to ocean currents? Where else in the world's oceans are garbage patches likely to form?

6. Hundreds of millions of years ago, all the continents on Earth were connected to fom a giant "supercontinent" called Pangaea. How might ocean currents have differed during the time of Pangaea compared to today? Explain your answer.

7. How did your predictions match the tracking data for each bottle?

8. How could you further test your conclusion on each bottle's origination? How could you confirm the bottle's starting point? ​