apes water quality lab questions - weebly

Name______________________________________________per______date_____ APES Water Quality Lab Examine the water quality test data on the back side of this paper. Determine the WQI value for each result using the handout with the WQI graphs. Then calculate the WQI for each test using the weighting factor. Then total the water quality score for each sample. Record data on the sheets provided. You will be able to conduct your own water quality tests at a later date. Attach a separate paper with answers and discussion for the following prompts. Use the language in the prompt in your answer/discussion. Clearly delineate your answers and discussions. That is: turn in a neatly organized paper. Results analysis: 1. Discuss the results of the water testing. 2. Examine the data tables. The weighting factor indicates which water quality parameters are most important in judging water quality. What are the two most important test to conduct according to the tables? 3. What samples were more “clean”? How do you know? 4. Which samples were more contaminated ? How do you know? 5. Discuss the test results that you used to determine these conclusions. 6. Choose one of the test results (except temperature) and construct a bar graph of the data. Extension questions: 1. A logging company cuts down all of the trees next to a river. a. Discuss two changes that may occur in water properties of the river and give one environmental effect for each change. b. What water quality tests could be used to monitor these changes? 2. A river flows past a very large cattle CAFO. The river shows elevated levels of nitrates and phosphates next to the CAFO. The readings are near normal before the river reached the CAFO and again several miles downstream of the CAFO. a. Assess the likelihood that the CAFO could be the source of the nitrate and phosphate pollution. b. Discuss why the dissolved oxygen (D.O.) would change as a result of an overload of the nutrients nitrate and phosphate. c. Discuss two additional changes in the water quality that could occur as a result of the river’s proximity to the CAFO. d. What water quality tests could confirm these changes? e. What does the acronym CAFO stand for? 3. The Clean Water Act is one of the most important environmental laws of the United States. Identify and discuss three significant provisions of the act.

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Page 1: APES Water Quality Lab questions - Weebly

Name______________________________________________per______date_____

APES Water Quality Lab Examine the water quality test data on the back side of this paper. Determine the WQI value for each result using the handout with the WQI graphs. Then calculate the WQI for each test using the weighting factor. Then total the water quality score for each sample. Record data on the sheets provided. You will be able to conduct your own water quality tests at a later date. Attach a separate paper with answers and discussion for the following prompts. Use the language in the prompt in your answer/discussion. Clearly delineate your answers and discussions. That is: turn in a neatly organized paper. Results analysis:

1. Discuss the results of the water testing. 2. Examine the data tables. The weighting factor indicates which water quality

parameters are most important in judging water quality. What are the two most important test to conduct according to the tables?

3. What samples were more “clean”? How do you know? 4. Which samples were more contaminated ? How do you know? 5. Discuss the test results that you used to determine these conclusions. 6. Choose one of the test results (except temperature) and construct a bar graph of

the data. Extension questions:

1. A logging company cuts down all of the trees next to a river. a. Discuss two changes that may occur in water properties of the river and

give one environmental effect for each change. b. What water quality tests could be used to monitor these changes?

2. A river flows past a very large cattle CAFO. The river shows elevated levels of

nitrates and phosphates next to the CAFO. The readings are near normal before the river reached the CAFO and again several miles downstream of the CAFO.

a. Assess the likelihood that the CAFO could be the source of the nitrate and phosphate pollution.

b. Discuss why the dissolved oxygen (D.O.) would change as a result of an overload of the nutrients nitrate and phosphate.

c. Discuss two additional changes in the water quality that could occur as a result of the river’s proximity to the CAFO.

d. What water quality tests could confirm these changes? e. What does the acronym CAFO stand for?

3. The Clean Water Act is one of the most important environmental laws of the United States. Identify and discuss three significant provisions of the act.