Triggers
What produced smoke for many years?
Factories.
What we can do whit paper, glass and plastic?
Recycle
What is the heating of the Earth called?
Global warming
These burn to create electricity
Fossil fuels / Coal
What is the gas that protects us from the sun
Ozone
What gases pollute the air from industries?
Toxic gases / carbon dioxide.
Name a transport that dont pollute
Walking/bicycle
What happens to the polar ice caps?
They melt
Name a source of natural air pollution
Volcanoes/Fires
This type of energy uses water to create electricity without smoke
Hydroelectric energy
What happened to the air?
It became dangerous.
What is the rule of the 3 Rs?
Reduce, Reuse, Recycle
What is the dark smoke from cars called?
Exhaust fumes
What is the main source of pollution in big cities?
Traffic and cars
Where is the air usually cleaner: in the city or the countryside?
The countryside
Why did pollution increase?
Human negligence and industrial activity.
What can factories install to clean smoke?
filters / Scrubbers
Which industry produces the most smoke?
Heavy manufacturing / Power planas
These sprays used for hair or cleaning can pollute indoor air.
Aerosol sprays
This gas has no color or smell and comes from car engines.
Carbon Monoxide
What health problems can pollution cause?
Respiratory problems.
They "clean" the air
Trees and plants
This gas comes from cows and landfills
Methane
Name the toxic metal that used to be in gasoline and paint.
Lead