What is/Causes of air pollution
Where does most particulate matter that pollutes the air come from?
Human Activities
A primary pollutant is a pollutant that?
is put directly into the atmosphere by human or natural activity.
Why is the world’s air quality so much worse now than what it was hundreds of years ago?
due to the use of vehicles and industry
What does the Clean Air Act allow the government to do?
regulate vehicle emissions in the US
What are some human activities that contribute to air pollution?
Use of certain Household products, power plants, and motor vehicles
are sources of primary pollutants such as carbon monoxide, nitrogen oxide, sulfur dioxide, and chemicals called volatile organic compounds (VOCs)
An example of soot from smoke is an example of?
Primary Pollutant
How much air pollution comes from passenger cars?
about 1/3 of air pollution is result of gasoline emissions is a result of passenger cars
What is the ZEV program?
The ZEV program is the zero-emission vehicle program
Substances that pollute the air can be in the form of?
in the form of solids, liquids, or gases.
An example of ground-level ozone would be an example of?
Secondary pollutant
What is Smog?
Why is there so much smog in urban areas?
is urban air pollution composed of a mixture of smoke and fog produced from industrial pollutants and burning fuels.
How do air scrubbers work?
remove some of the more harmful substances that would otherwise pollute the air.
A scrubber is a machine that moves gases through a spray of water that dissolves many pollutants. Ammonia is an example of a pollutant gas that can be removed from the air by a scrubber.
Most air pollution is the result of human activities, but can also some pollutants occur natural?
T or F
True
A secondary pollutant is a pollutant?
forms in the atmosphere by chemical reactions with primary air pollutants, natural components in the air, or both.
What is temperature inversion?
is the atmospheric condition in which warm air traps cooler air near Earth’s surface.
What are electrostatic precipitators?
machines used in cement factories and coal-burning power plants to remove dust particles from smokestacks.
What are the natural forms of air pollution?
dust, pollen, spores, and sulfur dioxide from volcanic eruptions.
What emits about 2/3 of all sulfur dioxide (SO2) into the air?
Power plants that produce electricity
What are VOCs?
Volatile organic compounds
Highest contribution to carbon monoxide air pollution?
Transportation