Ozone layer depletion tips for children
 


All about the Ozone Layer
What is Ozone gas?
Where is the ozone layer?
What does Ozone Depletion mean?How vulcanoes affect the ozone layer
Effects of Ultra-violet rays UV rays on humans
WHat is the Ozone Hole in the Antartica
Ozone layer depletion solutions


See other environmental lessons


Water pollution for children
What is waste management and disposal?
Forest preservation information for children
What is an ecosystem?
What is climate change?volcanic eruptions

ozone space



What is Ozone Depletion?


Ozone layer depletion, is simply the wearing out (reduction) of the amount of ozone in the stratosphere. Unlike pollution, which has many types and causes, Ozone depletion has been pinned down to one major human activity.

Industries that manufacture things like insulating foams, solvents, soaps, cooling things like Air Conditioners, Refrigerators and ‘Take-Away’ containers use something called chlorofluorocarbons (CFCs). These substances are heavier than air, but over time, (2-5years) they are carried high into the stratosphere by wind action.
Ozone destruction by Clorine

Depletion begins when CFC’s get into the stratosphere. Ultra violet radiation from the sun breaks up these CFCs. The breaking up action releases Chlorine atoms. Chlorine atoms react with Ozone, starting a chemical cycle that destroys the good ozone in that area. One chlorine atom can break apart more than 100,000 ozone molecules.

Ozone layer depletion is best illustrated or explained with the Ozone Bucket Analogy. Click button below to have a look
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Ozone depletion explained

There are other Ozone Depleting Substances (ODS) such as methyl bromide used in pesticides, halons used in fire extinguishers, and methyl chloroform used in making industrial solvents.

Other chemicals that naturally destroy Ozone are Noy, Hox, Clx, which belong to the Nitrogen, Hydrogen and Chlorine families.

Measurements of CFCs in the stratosphere are made from gas balloons, aircraft and satellites.

Sadly, there isn’t much humans can do to replenish the depleted Ozone, as it tends to recover slowly by itself. All we can do is to be more responsible with our manufacturing needs so that we do not introduce more CFCs into the air.

previous pageEffects of ozone depletion

ozone space



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