Monday, March 24, 2014

3/24/14

Tonight's homework is to complete Assignment 51. See below.

Oh snap 12CD! I let you go without giving you the homework! How will you live? Here's how... you will either Assignment 51 tonight or you'll receive it tomorrow and do it for Wednesday. I could take the blame for this mishap except... I won't.

Assignment 51 - Air Pollution Comprehension Questions: Part 1

Read the article below from the Fremont Free Press and answer the questions that follow. 
(a) Support Councilwoman Smith’s statement that nitrogen-based fertilizers cause other environmental 
problems by describing one such problem. 

(b) Identify a nitrogen-containing primary pollutant that contributes to the formation of photochemical 
smog. Describe how that primary pollutant forms and explain why Councilman Budd was wrong. 

(c) Identify one secondary pollutant that is a component of photochemical smog and describe the 
following. 

(i) How the secondary pollutant forms 

(ii) ONE human health effect of the pollutant 

(iii) ONE environmental effect of the pollutant 

(d) Earth’s natural nitrogen cycle occurs in several steps. Describe one chemical transformation that occurs 
in the natural nitrogen cycle and discuss the importance of that transformation to an ecosystem. 

2. What is the Clean Air Act? Why does it exist?

3. Which pollutants discussed do you think are relevant for residents of New York City?

4. The National Atmospheric Deposition Program monitors wet deposition. From their available data, the following information was acquired for the Leading Ridge Station, Huntingdon County, Pennsylvania from 1979 to 2010. Rainwater is collected throughout the year and wet deposition data is measured. (SOURCE: http://nadp.sws.uiuc.edu/sites/ntnmap.asp)

a. Create a graph showing the change in NO3 and SO4 concentrations over time. It is not necessary to graph every data point – for example, you may want to graph every other year or every fifth year, etc.

b. Create a graph showing the change in pH over time.

c. Calculate the rate of change in NO3 concentration and SO4 concentration between 1979 and 2010.

d. Make inferences and draw conclusions based on the graphs and your calculations.

Year
NO3 Concentration  (mg/L)
SO4 Concentration (mg/L)
pH
1979
1.73
3.32
4.24
1980
2.06
3.39
4.14
1981
1.97
3.48
4.15
1982
2.16
3.51
4.16
1983
1.64
2.61
4.25
1984
2.23
3.33
4.15
1985
1.77
2.71
4.22
1986
2.11
3.34
4.13
1987
2.44
3.78
4.08
1988
1.94
2.95
4.22
1989
2.14
3.16
4.16
1990
1.92
2.75
4.23
1991
2.10
3.21
4.15
1992
1.79
2.54
4.26
1993
1.90
2.67
4.22
1994
1.56
2.49
4.24
1995
1.66
1.86
4.35
1996
1.61
2.00
4.33
1997
1.68
2.02
4.31
1998
1.87
2.38
4.25
1999
1.62
2.00
4.36
2000
1.99
2.53
4.25
2001
1.87
2.60
4.28
2002
1.62
2.17
4.39
2003
1.35
2.00
4.39
2004
1.32
2.04
4.35
2005
1.27
1.64
4.43
2006
1.33
2.21
4.38
2007
1.52
2.20
4.35
2008
1.22
1.67
4.49
2009
0.97
1.24
4.68
2010
0.80
0.97
4.78


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