Name: _________________________________ Date: ___________________ Env. Science Period: _____
Chapter 11.3 PBL
1. While everything humans do with regards to water causes some sort of pollution, what are 2 of
the greatest underlying causes?
2. Where on Earth does water pollution have the greatest impact on humans?
3. Distinguish between point-source pollution and nonpoint-source pollution and provide 3
examples of each type.
4. What is the best way to control nonpoint-source pollution?
5. List the 6 types of principle water pollutants.
6. How does wastewater treatment help rivers or lakes?
7. Most materials in wastewater, like animal waste, paper and soap, are _____________, meaning
it can be broken down by living organisms.
8. How can we solve the problem of sewage sludge?
9. How can artificial eutrophication occur?
10. What is the danger of thermal water pollution?
11. Why is groundwater pollution among the world’s most difficult environmental problems?
12. What percentage of ocean pollution is caused by activities on land? Why?
13. Although oil spills are dramatic and costly, they only represent about 5% of oil pollution in
oceans. What causes the other 95%?
Name: _________________________________ Date: ___________________ Env. Science Period: _____
Chapter 11.3 PBL
1. While everything humans do with regards to water causes some sort of pollution, what are 2 of
the greatest underlying causes?
2. Where on Earth does water pollution have the greatest impact on humans?
3. Distinguish between point-source pollution and nonpoint-source pollution and provide 3
examples of each type.
4. What is the best way to control nonpoint-source pollution?
5. List the 6 types of principle water pollutants.
6. How does wastewater treatment help rivers or lakes?
7. Most materials in wastewater, like animal waste, paper and soap, are _____________, meaning
it can be broken down by living organisms.
8. How can we solve the problem of sewage sludge?
9. How can artificial eutrophication occur?
10. What is the danger of thermal water pollution?
11. Why is groundwater pollution among the world’s most difficult environmental problems?
12. What percentage of ocean pollution is caused by activities on land? Why?
13. Although oil spills are dramatic and costly, they only represent about 5% of oil pollution in
oceans. What causes the other 95%?