Name______Period______Date of Final______
Aquatic Science Fall Final Review 2010: Freshwater
Water Chemistry
1. Draw and label the parts of a water molecule.
2. Describe and give an example of the following properties of water:
a. Cohesion
b. Adhesion
c. Surface Tension
d. Capillary Action
e. Buoyancy/Displacement
f. Thermal Expansion
g. Density
h. Boiling and freezing point
3. Describe the distribution of water on earth
a. Where is most of the water?
b. What %?
c. The freshwater?
d. What % ?
e. The Liquid freshwater?
4. Read the solubility graph.
a. What is a solute? give an example.
b. What is the universal solvent?
c. What chemical is most soluble in water at 40C?
d. What chemicals (unusually) are less soluble as temperature increases?
Water Quality
5. Water quality characteristics: define and give 4 examples
a. Physical characteristics
b. Chemical characteristics
c. Biological characteristics
6. Give an example of how changes in each can affect aquatic life
a. Dissolved oxygen
b. Temperature
c. pH
d. Conductivity/salinity
e. Biological oxygen demand
f. Turbidity
7. Describe and give an example of these types of pollution:
a. Physical
b. Chemical
c. Toxic
d. Nutrient
e. Biological
8. What two things affect the amount of oxygen that can dissolve in water?
9. What kind of aquatic environment would have very high oxygen levels?
10. Describe the process of eutrophication, starting with increased nutrients, and ending with dead fish.
11. Why is plastic pollution a problem in the ocean?
Hydrology, Lakes, Rivers and Aquifers
12. Draw and label the stream order of a fourth-order stream.
13. Hydrology is the study of ….?
14. What is a watershed?
15. How do we use maps to help define watersheds?
16. What is fresh water?
17. Draw the water cycle including the following processes:
a. Precipitation
b. Evapotranspiration
c. Condensation
d. Melting and Freezing
e. Stream Flow
f. Infiltration
18. Describe and give an example of a lentic ecosystem.
19. Describe and give an example of a lotic ecosystem.
20. What is an aquifer?
21. Draw a picture of an aquifer and label the following:
a. Recharge
b. Discharge
c. Bedrock
d. Groundwater exchange with a stream or lake
Freshwater Ecology and Fish Anatomy
22. Draw a food chain. What do the arrows represent?
23. Now use that food chain to build a food web by adding more producers and consumers. Label:
a. Autotrophs
b. Heterotrophs
c. Detritivores
24. Place each of the organisms in your food chain on the appropriate level of a trophic (energy) pyramid
a. What % of an organism’s energy is available to its predator?
b. Where does the rest of the energy go?
25. What is symbiosis?
26. For each of the following relationships, give an example and describe how the relationship works.
a. Mutualism
b. Commensalism
c. Parasitism
d. Predation
e. Competition
27. What are macroinvertebrates?
28. What do they tell us about a water sample?
29. Identification: describe what traits are common to organisms in these groups
a. Mollusca (clams, mussels and snails)
b. Insecta (bugs)
c. Arachinda (ticks, spiders, and mites)
d. Crustacea (lobsters and crabs)
e. Annelida (segmented worms)
f. Platyhelminthes (flatworms)
30. Draw a fish. Label and describe the role of the following:
a. Chambered heart
b. Gills
c. Operculum
d. Caudal fin
e. Dorsal fin
f. Pectoral fin
g. Anal fin
h. Swim bladder
i. Lateral line
Global Water Issues
31. Give an example of how an environmental disaster has led to increased protection of the environment.
32. Describe the importance of your river (from the river basins project) to people or the environment.
33. Give one example of how humans are directly or indirectly (global climate change) negatively impacting your river.
34. Describe one way that humans are working to ameliorate (repair) a global water crisis.
35. Explain how the sale of water as a commodity can affect low-income people, especially in developing countries.