Paper I · 7 Sustainable Development & Environment · 7.3.1 Climate change science

7.3.1.4 Ozone layer depletion: ozone hole and ozone-depleting substances

Man-made chlorine and bromine compounds such as CFCs and halons thin the stratospheric ozone layer that blocks harmful ultraviolet rays, creating an "ozone hole" over Antarctica each spring.

  • APPSC Paper I · Paper I
  • Standard level
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Key terms

  • ozone layer
  • stratosphere
  • Dobson unit
  • ozone hole
  • Antarctica
  • CFCs
  • halons
  • polar stratospheric clouds
  • polar vortex
  • UV-B
  • ODS
  • World Ozone Day

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Mains writingMains writing
  5. Common trapsFoundation
  6. Quick revisionFoundation

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