Chlorofluorocarbons are greenhouse gases. Ozone concentrations are highest in the troposphere. Ultraviolet radiation is highest at the equator. The greatest loss of stratospheric ozone has occurred over the equator. Atmospheric ozone forms in the darkness of the Antarctic winter.
Teachers notes True True False.
It is a greenhouse gas. This exercise is valuable because this topic is likely to have been introduced to students via the media and the students may have picked up misconceptions, distortions or incorrect information. In particular students frequently confuse ozone depletion with the enhanced greenhouse effect. It is important to emphasise that the two effects are completely different. You could use this activity before beginning the topic to see if students are confused about some aspects.