Urban Air Quality Flashcards
What are particulates?
Tiny pieces of solids and tiny droplets of liquids floating in the air.
What are 3 sources of particulates?
Vehicle exhausts
Construction
Burning of fuel
What do particulates cause?
Health problems
What pollutants are caused from burning fossil fuels?
Nitrogen oxides, sulfur oxides and hydrocarbons
How does photochemical smog form?
When UV light causes pollutants to break down in harmful chemicals.
Where is photochemical smog most common?
In cities
What are 3 ways to reduce air pollution?
Congestion Charging
Pedestrianisation
Public transport improvements
What is congestion charging?
When people are charged if they use their vehicles in certain places at certain times
What does congestion charging reduce?
Pollution in city centres
What is pedestrianisation?
Vehicles restricted in certain areas in certain times
What is a disadvantage of improving public transport?
Expensive
What is an example of legislation which helped reduce pollution in 1956 and 1968?
The UK clean air acts
