Water Pollution Reading Miller Chapter 22

Water Pollution Reading Friedland Chapter 14Name ______

1. Case study Chesapeake Bay

a) What are the effects of excess nutrients? ______

b) What are the effects of sediments? ______

c) what are the effects of pesticides? ______

d) how has the problem been addressed? ______

2. Explain these terms and give examples

Point sources______

Nonpoint sources ______

3. Name 3 reasons why human waste is a problem ______

______

4. B.O.D means ______

It increases when ______

If the oxygen level drops too low what happens? ______

5. Explain the difference between natural and cultural Eutrophication

______

______

6. Where is the huge dead zone shown in figure 14.3 ____

7. Name 6 diseases caused by human wastewater ______

______

8. How many people die each year in the world due to unsafe water? ______

9. What percent of the worlds population does not have safe drinking water?

10. Water testing a) Is fecal coliform always unhealthy? ______

Why is it used as an indicator species? ______

11. Septic systems - Explain these terms

Septic tank ______

Leach field______

12. How often should septic tanks be pumped out? ______

13. Sewage Treatment plants

Primary treatment involves ______

Secondary treatment ______

Step 7 ______

14. Why is the water not OK for drinking ? ______

15. What extra step could be taken? ______

16. When can cities legally dump raw sewage? ______

14.3.3 17. Animal feed lot waste

What is the current method and what is the risk ______

______

Heavy metals Read and complete the table

1. Why is lead poisoning a bigger problem for low income people? ______

2. How many people in Bangladesh drink arsenic contaminated water? ______

3. Is inorganic mercury harmful? ______

How does it become a problem? ______

4. What is the problem with the “inert “ingredient in Roundup? ______

5. Which Pharmaceutical is MOST commonly found in drinking water? ______

6. Why are hormones a problem? ______

7. a) What happened in 1959 to the Cuyahoga river ? ______

b) How has it changed? ______

8. PCB's are ______

PCB's cause ______they have been banned in the USA since ______

9. PBDEs are ______

Oil Pollution

1. How much oil leaked form the Deepwater Horizon ? ______

2. Which natural creatures were affected by the Exxon Valdez spill ______

how long has the cleanup been ongoing ______

3. How has oil tanker design changed ? ______

4. What are natural oil seeps? ______

5. Briefly describe 3 ways to remediate oil pollution ______

______

6. 14.6.1 Why is toxic coal plant waste a special problem? ______

7. 14.6.2. How does sediment affect fish? ______

8. 14.6.3 Name examples of 2 sources of thermal pollution

______

describe effects of thermal pollution on natural creatures ______]

______

WatPollnRead11/7/19