HomeIB ESSTopic 6.4

Stratospheric ozone

Topic 6.4 examines the ozone layer, the causes and consequences of ozone depletion, and the success of the Montreal Protocol. Students study CFCs, UV radiation, and how international cooperation addressed the ozone crisis — often compared with climate change governance in IB ESS exams.

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IB ESS · Topic 6.4

Sub-topics in Topic 6.4

6.4.1Radiation from the Sun6.4.2Ultraviolet radiation6.4.3The ozone layer6.4.4Harm from ultraviolet radiation6.4.5A natural ozone balance6.4.6Ozone-depleting substances6.4.7Ozone depletion and its effects6.4.8The Montreal Protocol6.4.9The ozone planetary boundary