How does our air become dirty?
Lots of things make the air dirty. Some things we use
everyday such as cars, electricity and heating create gases which
make the air dirty. These gases and anything else that makes
the air dirty are called “pollutants”, some of the main ones are
This is pollution you can see and is created in a number of
ways, for example, when things are being burnt. Burning
things not only creates the smoke that can be seen but a number of
other pollutants are also released during the burning process.
Traffic (cars, buses and lorries) on our roads causes air
pollution when gases are released from their exhausts. Some
cars, buses and lorries create more pollution than others.
Everybody who owns a vehicle has to pay to be able to drive it on
the road each year, the cost of this is based on how much pollution
the vehicle is causing, the more you cause the more you
There are lots of different gases, some of the ones which cause
us problems are called sulphur dioxide, nitrogen dioxide, ozone and
carbon monoxide. These are created by a number of things and
cause different problems for our environment. We cannot see
these gases but we can find out how much is the in air.
You may find it hard to imagine metals polluting our skies but
these can be released into the air as fine particles (dust) that
cannot be seen. Factories in industry that are working with
metals mainly cause this type of pollutant.
Last Updated on 2/28/2012