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Clean air

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Ryan Bennett

on 14 May 2014

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Transcript of Clean air

Some examples are:
- The burning of fossil fuels (practically anything)

- Natural processes such as wildfires and volcanoes

- Aerosols
What is clean air?
Clean air is air that contains little to no pollution. It mainly contains oxygen, nitrogen, carbon dioxide, water vapour and some noble gases.
Clean air
By Charlie, Ryan and Gus

Dangerous pollutants
Carbon monoxide: Carbon monoxide mainly comes from car exhaust fumes, and is toxic. High levels of it will increase the concentration of methane in the air, which will affect the ozone layer and contribute to global warming.

Nitrogen oxide: Nitrogen oxide is usually a result of burning biomass. It is considered an air pollutant because it contributes to photochemical smog, which has negative effects on human health.

Sulfur dioxide: Sulfur dioxide mainly comes from industrial processes, such as oil refinery. It is formed by burning sulfur. When sulfur dioxide dissolves in clouds, it makes the rain more acidic than normal.
Pollution is the addition of harmful substances can damage the environment and living things.

Most of the waste from our houses is buried in land fills and can contain toxic chemicals. Sewage harms aquatic organisms and can damage our health.

CO2 is released during the use of fossil fuels and prevents heat escaping into space, the rise of CO2 levels contributes to global warming.

Sulfur compounds are also present in most fuels and, when burned, give off sulfur dioxide which causes acid rain.

CFC's used to be used in aerosol cans, fridges and insulating material. CFC's destroy the ozone and as a result, there is an increase in ultraviolet light to reach earth.
Pollution from cars
As we have mentioned before, fossil fuels release carbon dioxide into the air (commonly petrol and diesel in cars). As approximately 75% of the population own a car, that results in a tremendous amount of carbon dioxide being released into the air every day. Catalytic converters are designed to minimize the amount of Carbon Monoxide output from car exhausts.
The greenhouse effect
When Carbon Dioxide is released into the air, it travels up to the atmosphere, where it is kept inside the ozone layer. This applies lots of heat to the polar ice caps, therefore melting them.
Air pollutants
Carbon Cycle
Why should we care?
(Charlie's passionate speech)
We should and need to care about our already critically high pollution scale because we are the future of Earth, and if we do not solve this crisis soon, be prepared to see more drastic weather such as acid rain, tsunamis and strange weather patterns, not to mention the crumbling ozone layer which could influence thousands more cases of skin cancer.
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