Stratospheric Ozone (DP IB Environmental Systems & Societies (ESS): SL): Exam Questions

Briefly outline what happens when UV radiation interacts with a molecule of ozone.

State two effects of ultraviolet (UV) radiation on humans.

State one source of ozone depleting substances.

The Montreal Protocol on Substances that Deplete the Ozone Layer is an international treaty established in 1987 to address the depletion of the Earth's ozone layer.

It aims to phase out the production and consumption of ozone-depleting substances (ODS).

The protocol has been highly successful in reducing ODS, leading to the gradual recovery of the ozone layer and mitigating the harmful effects of ultraviolet (UV) radiation on the environment and human health.

Suggest one reason why an illegal market for ozone-depleting substances still exists.