Outdoor Air Quality

1. Which pollutants come from mobile sources?
Hydrocarbons
Nitrogen oxides
Carbon dioxide
Carbon monoxide
Particulates
All of the above

2. The combination of nitrogen oxides and hydrocarbons in the presence of sunlight causes
Global warming
Smog
Ozone hole in the atmosphere
Acid rain

3. Ozone in the environment is
Beneficial at high altitudes
Harmful at low altitudes
Both of the above
Neither of the above

4. Which of the following causes the greatest amount of air pollution?
City buses
Passenger cars and light trucks
Over-the-road trucks
Power plants

5. In Hartford, the major components of air pollution are
Hazardous air pollutants
Fine particles
Dioxin
Ozone
All of the above
None of the above

6. The number of known hazardous air pollutants is about
10
25
200
2,000

7. Hazardous air pollutants are
Also known as air toxics
Are known or suspected causes of serious health problems
Are known or suspected causes of serious environmental damage
All of the above

8. Particles in the air that are now considered to have the most serious health effects are
PM1
PM 2.5
PM 10
PM 100

9. Which of the following is probably not a health effect of ozone?
Lung inflammation
Worsening of asthma
Coughing during exercise
Obesity
Increased respiratory illnesses in children

10. Which of the following activities can help reduce the amounts of dangerous substances in the air?
Greater use of public transportation
Greater use of private cars
Use of leaded gasoline
Frequent flossing