Instructions: Choose the phrase that best answers each question.
1. Examine Figures 1 and 2. Which division of the ocean has insufficient light for photosynthesis and a rapid decrease in temperature?
2. Examine Figure 3. Which of the following best describes conditions in the surface (photic) zone? Note: nutrients are compounds such as nitrates, phosphates, and silicates (shown in panels 2, 3, and 4).
A) High in both nutrients and dissolved oxygen.
B) Low in both nutrients and dissolved oxygen.
C) High in nutrients and low in dissolved oxygen.
D) Low in nutrients and high in dissolved oxygen.
3. Examine Figure 4. At 10 meters depth, what percentage of incoming solar energy is available in turbid coastal water?
4. Examine Figure 5. This diagram shows that in northern polar latitudes (for example, the Siberian Sea), phytoplankton biomass is highest in
5. Examine Figure 8. This diagram shows that an organism living at Mean Sea Level would be exposed to air for what percentage of the tidal day?
Instructions: Write short answers for the following questions. Answers will be graded credit / no credit. Results will be available several days after the voyage due date.
1. In class we will discuss how organisms have developed adaptations for living in the various environments of the ocean. Examine Figures 1 and 2 to see the characteristics of the abyssal environment. Suggest one adaptation that organisms might develop to help them thrive in the abyssal environment. (An adaptation can be any charateristic of any organism, such as its size, shape, color, way of obtaining food, etc).
2. See Figure 3. This diagram shows that the concentration of dissolved oxygen (panel 1) varies with depth. Try to find one reason to explain why the concentration is so much different in surface water than in deeper water.
3. See Figure 4. Plants or algae require light to do photosynthesis. Do you think plants or algae could survive at greater depths in turbid coastal water or in clear ocean water?
4. Examine Figures 5 and 6. Organisms develop characteristics in response to their environment. Figure 5 shows changes in plankton biomass throughout the year from January (J) to December (D) in high-latitude (polar) regions. Figure 6 shows the migratory path of the California gray whale, from coastal Mexico in the winter to the northern waters near Alaska in the summer. Why might these marine mammals migrate to the polar latitudes in the summer?
5. In Voyage 1, I asked you to comment on what worked well for you and what did not work so well for you in the voyage. Now that you have completed 9 voyages, I would like to get your perspective again. The voyages are designed to prepare you for class (which is why they are due before attending class) and to provide you with some experience using "real-world" data and imagery. How well did the voyages work for you in terms of these two objectives? Any other comments you have about the computer work are welcome.