Chapter 13 Reading Guideline



Chapter 20 Reading Guideline: Water Pollution

Directions: Identify the following. Be as specific as possible, and include names, dates, and relevant facts as appropriate. Be sure to explain the significance of the term. Identifications and question answers must be at least three sentences in length minimum.

Core Case Study: Lake Washington

Question 1: Lake Washington was Seattle’s wastewater dumping ground. What is Los Angeles’ wastewater dumping ground? What effects does this gave on our water system and lifestyle?

20.1 What are the Causes and Effects of Water Pollution?

a) Describe 3 Major Water Pollutants and Their Sources

b) Describe two diseases found in contaminated drinking water

Question 2: Are point sources or non-point sources a bigger threat to our environment? Justify your position with 2 pieces of scientific evidence.

20.2 What are the Major Water Pollution Problems in Streams and Lakes?

c) Stream cleansing

d) Ohio’s Cuyahoga River

e) India’s Ganges River

f) Eutrophication, Oligotrophic vs Eutrophic lakes

Question 3: A large number of dead fish are floating in a lake. How would you determine if they died from cultural eutrophication or from toxic chemicals?

20.3 What are the Major Pollution Problems Affecting Groundwater and Other Drinking Water Sources?

g) Groundwater plumes

h) MTBE: Methyl tertiary butyl ether

i) Arsenic in groundwater

j) Groundwater purification

Question 4: At the beginning of the year a farmer named Bob in Oklahoma started using pesticides, specifically DDT, on his farm. He knows that DDT is harmful, but it is the only chemical that will kill all the bugs eating his crops. This farmer also receives all his water on the farm from a groundwater aquifer. At the end of the year, his cows started to get sick and die. What is the likelihood that DDT is causing the cows to become sick? Explain.

20.4 What are the Major Water Pollution Problems Affecting Oceans?

k) Dead zones

l) Oil spills

20.5 How Can We Best Deal with Water Pollution?

m) Clean Water Act 1972

n) Septic systems

o) Wastewater treatment: primary, secondary, tertiary, disinfection

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Ohio’s Cuyahoga River Burning, 1969

Exxon Valdez Oil Spill, 1989

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