Chapter 18 Water Pollution

CHAPTER 18 WATER POLLUTION

Chapter Overview

This chapter explains water pollution and describes its effects. Both point source
and nonpoint source pollutants are examined. Water quality and the indicators
of water quality are essential information. Legislation to ensure water quality is
explained.

Monday, 2.1-  Test Chapter 17 and Case Study Chapter 18, "Protecting Our Nation's Water."

Tuesday, 2.2 - Cornell Notes 18.1-18.2. Socratic Discussion of Text

Powerpoint

Free-Response Question:
Directions: Answer all parts of the following question. Where explanation or
discussion is required, support your answers with relevant information and/or
specific examples. When a calculation is required, be sure to show how you
arrived at your answer.
1. Students at the Knightland School are studying stream ecology. The following
data has been collected from their stream.
Date Temperature
oC
pH Dissolved

(a) Describe TWO abiotic factors other than the ones listed that the students
could test to assess water quality.
(b) Explain the correlation between temperature and the level of dissolved
oxygen.
(c) Describe the trend for the nitrate levels.
(i) Explain a reason for this trend.
(ii) For the reason you gave in (i), describe a method that might mitigate
the amount of nitrate entering the stream.


1. What are the major categories of water pollution? What is an example of each
and what problem(s) does each create?


3. What is cultural eutrophication? How does it occur? What steps can be taken
to reduce the effects of cultural eutrophication? 

DOL Questions:
Practice Questions
Multiple Choice:
Directions for questions 1-5: The lettered choices below correspond to the
descriptions given in questions 1-5. Select the one lettered choice that best fits
each statement. Each choice may be used once, more than once, or not at all.
(A) point source
(B) nonpoint source
(C) eutrophic
(D) biochemical oxygen demand
(E) dissolved oxygen
     1. useful test for organic waste in water
     2. run-off of animal waste from a feedlot
     3. varies with temperature
     4. water rich in organisms and organic material
     5. an effluent pipe from a factory

 
Wednesday, 2.3 - Cornell Notes 18.3


Thermal Pollution and Its Effect on Dissolved Oxygen Activity

This activity will help students understand a type of pollution that they can’t see.
Heat dissipated into a body of water can be very detrimental to the organisms
living in that water. During this activity, the students will monitor dissolved
oxygen as a function of temperature. Graphing the results, the students should
be able to determine that the two measurements vary inversely. The worksheet
for this activity can be found at the end of this teacher’s manual chapter.

DOL Questions

6. Hypoxia often results from
(A) pesticide run-off
(B) factory air pollution
(C) habitat alteration
(D) a nutrient decrease leading to deaths of organisms
(E) a nutrient overload that leads to eutrophication

7. Which of the following is NOT a category of water pollution?
(A) thermal
(B) inorganic chemicals
(C) animal manure
(D) sediment
(E) organic chemicals

8. What is the “Dead Zone”?
(A) It is an area in the Gulf of Mexico that supports no aquatic life.
(B) It is part of the Arctic Ocean where no life exists because of the ice.
(C) It is the back of the AP classroom.
(D) It is another phrase for the abyssal zones of the oceans.
(E) It is habitat where only very limited species live.

9. Which legislation provided funding for municipal sewage treatment plants?
(A) The Safe Drinking Water Act
(B) The Clean Water Act
(C) Resource Conservation and Recovery Act
(D) Ocean Dumping Act
(E) Federal Water Pollution Control Act

10. What event eventually led to the creation of the Clean Water Act?
(A) Unlimited ocean dumping
(B) Overuse of pesticides in agricultural fields
(C) Fires on the Cuyahoga River
(D) Unrestricted use of fertilizers on golf courses
(E) Rachel Carson’s book “Silent Spring”

Thursday, 2.4- Cornell Notes 18.4

2. What is the difference between point source and nonpoint source pollution?
How has the Clean Water Act reduced point source pollution?

4. What method is used to treat municipal sewage at a treatment plant? How
does a wetland serve the same function? Why does the amount of sewage
affect the outcome? 

Free Response Question

Water Sample Testing - You will bring a water sample from a source in a sealed bottle and we will test one sample for each group.

Water Quality Test	Results
Dissolved Oxygen (meter)
Nitrate/Nitrogen Tablet
Low Range Phosphate
Total Alkalinity
Turbidity
pH
Dissolved Oxygen (kit)

 Friday, 2.5 - Cornell Notes 18.5

5. The Clean Water Act has been called the United States’, "most successful and
popular environmental legislation?” Why? What goals of the legislation still
need work?


Deep Water Drilling Critical Thinking Activity

This activity will ask the students to think critically about the effects of oil
pollution as a result of deep water drilling. It would be advantageous for the
students to have read a few articles on deep water drilling. The students will be
presented with a scenario and a series of questions. This information can be
found on a worksheet at the end of this teacher’s manual chapter.

Quiz Chapter 18