1. Ocean Water & Ocean Life
Quiz
Ocean Water & Ocean Life

2. ____ refers to the total amount of solid material dissolved in water.
What does ppm mean?
What does the symbol ?
The dissolved substances found in seawater primarily come from ____ and ____. (2 pts)
What is the average salinity of the world’s oceans?

3. The following processes affect salinity
The following processes affect salinity. Write A if it tends to increase salinity and B if it tends to decrease salinity (1 pt each)
Precipitation
Evaporation
Run-off from land
Sea-Ice melting

4. What does the graph tell us? (5 points)

5. Identify which graph represents temperature variation in (1 pt each)
oceans found in the tropics.
Oceans found in polar regions.
(Write the letter of your choice only.)
Draw the corresponding pycnoclines for each graph. (3 pts each)
Relate productivity to the presence of thermocline and pycnocline. (5 points)

7. The two factors affecting seawater density are temperature and salinity. Based from this statement describe an ocean where the seawater density is greatest/maximum. (3 pts)
List the three layers of the ocean starting with the most accessible to humans.(3pts)
Classify the following marine organisms as planktons, nektons and benthos. (1 pt each)
Diatoms c. Sea urchins
Tuna

8. Based from the graph, identify the seasons
Based from the graph, identify the seasons. (clue: the source for this data is a Northern Hemisphere temperate ocean) (2 pts/season)
Explain the graph. (10 points)

9. Categorize the marine life zones shown in the diagram
Categorize the marine life zones shown in the diagram. (1 pt for category + 1 pt/correct zone assigned)

10. Identify these pictures. (1 pt each)

11. Differentiate chemosynthesis from photosynthesis. (3 pts)
Which figure represents a food web?
T/F. The transfer of energy between trophic levels is very efficient.