Ozone layer: a story of global success
I can describe why the ozone layer was nearly destroyed, but through a global community and international resolution it was saved.
Ozone layer: a story of global success
I can describe why the ozone layer was nearly destroyed, but through a global community and international resolution it was saved.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- The ozone layer protects life from harmful ultraviolet (UV) radiation from the Sun.
- Chlorofluorocarbons (CFCs) were once used, and when they entered our atmosphere reacted with ozone (O₃).
- Ozone levels decreased, but scientific communication led to action being taken to prevent further loss of ozone.
- The work of analytical scientists suggests the ozone layer is now reforming.
Keywords
Ozone - Ozone is made up of oxygen atoms. It has the molecular formula O₃.
Ozone layer - The ozone layer refers to an area in the stratosphere where there is a high concentration of ozone.
Ultraviolet (UV) radiation - Ultraviolet (UV) radiation is a type of electromagnetic radiation which is emitted from the Sun.
Chlorofluorocarbons - Chlorofluorocarbons are compounds consisting of chlorine, fluorine and carbon atoms only.
Analytical scientists - Analytical scientists use a range of scientific techniques to study the chemical composition of substances.
Common misconception
Ozone layer and climate change are linked/the same thing.
Ozone layer depletion was caused by human activity, but not through use of burning fossil fuels/greenhouse gas emissions. Both are atmospheric issues, but not the same issue.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
6 Questions
a layer of gas surrounding a planet
a type of electromagnetic radiation which is emitted from the Sun
compound consisting of chlorine, fluorine and carbon only
an area in the atmosphere where there is a high concentration of ozone
Exit quiz
6 Questions
