ADVANCEMENT OF THE PRACTITIONER
JEH QUIZ
Warmer Air Disrupts Downward Trend in Ozone Concentrations in North Central Texas, United States FEATURED ARTICLE QUIZ #3
A vailable to those with an active National Environmental Health Association (NEHA) membership, the JEH Quiz is offered six times per calendar year and is an easily accessible way to earn continuing education (CE) contact hours toward maintaining a NEHA credential. Each quiz is worth 1.0 CE. Completing quizzes is now based on the honor system and should be self-reported by the credential holder. Quizzes published only during your current credential cycle are eligible for CE credit. Please keep a copy of each completed quiz for your records. CE credit will post to your account within 3 business days. Paper or electronic quiz submissions will no longer be collected by NEHA staff. INSTRUCTIONS TO SELF-REPORT A JEH QUIZ FOR CE CREDIT 1. Read the featured article and select the correct answer to each JEH Quiz question. 2. Log in to your MyNEHA account at https://neha.users.membersuite.com/ home. 3. Click on Credentials located at the top of the page. 4. Select Report CEs from the drop-down menu. 5. Enter the date you finished the quiz in the Date Attended field. 6. Enter 1.0 in the Length of Course in Hours field. 7. In the Description field, enter the activity as “ JEH Quiz #, Month Year” (e.g., JEH Quiz 3, December 2024). 8. Click the Create button.
Quiz effective date: December 1, 2024 | Quiz deadline: March 1, 2025
of MDA8 ozone concentrations above 0.070 ppm both a. trended downward. b. remained level. c. trended upward. 8. The following years had relatively high numbers of exceedances and annual MDA8 averages considering the overall temporal trend:
1. To protect human and environmental health from air pollutants, the U.S. Environmental Protection Agency regulates ozone and a. particulate matter and carbon monoxide. b. sulfur dioxide and nitrogen dioxide. c. lead. d. a and b. e. all of the above. 2. Ozone levels are considered unhealthy when the 8-hr average exceeds a. 0.007 ppm. b. 0.070 ppm. c. 0.700 ppm. d. 7.000 ppm. 3. The Dallas-Fort Worth area had 48 ozone alert days in 2022, which represents the most alerts since a. 2009. b. 2010. c. 2011. d. 2012. 4. The objective of this study was to identify and evaluate associations between maximum daily average 8-hr (MDA8) ozone levels and meteorological and emissions variables in North Central Texas. a. True. b. False. 5. Cities with __ are especially prone to hazardous ozone concentrations. a. stagnant air and low relative humidity b. high solar radiation c. heavy emissions of precursor gases d. b and c e. all of the above 6. Approximately __ of nitrogen oxides (NO x ) in Dallas-Fort Worth comes from cars, trucks, and off-road mobile sources. a. 60% b. 70% c. 80% d. 90% 7. Of the measurements analyzed from January 1, 2001–December 31, 2023, the annual number and annual average
a. 2005. b. 2011. c. 2021–2023. d. all of the above. e. none of the above. 9. __ had fewer MDA8 ozone
exceedances and lower annual MDA8 averages, which coincided with lower solar radiation and lower temperature measurements.
a. 2005 and 2011 b. 2005 and 2014 c. 2010 and 2011 d. 2010 and 2014 10. This study also found that NO x
concentrations tended to be higher in __ months. a. winter b. spring c. summer d. fall 11. In this study, the MDA8 ozone levels significantly correlated the strongest with a. average NO x . b. maximum temperature. c. noon solar radiation. d. noon wind speed. e. noon relative humidity. 12. In this study, the MDA8 ozone levels significantly correlated the weakest with a. average NO x . b. maximum temperature. c. noon solar radiation. d. noon wind speed. e. noon relative humidity.
JEH Quiz #1 Answers July/August 2024
1. c 2. a 3. e
4. a 5. b 6. c
7. a 8. c 9. b
10. b 11. a 12. b
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December 2024 • Journal of Environmental Health
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