Topic 6.4: Stratospheric Ozone Questions

Farm workers in Patagonia work outdoors all day during the southern spring. Outline one impact of low concentrations of stratospheric ozone on human health.

Figure 1 shows the mean area of the ozone hole each September and October from 1979 to 2001. State where the ozone hole shown in Figure 1 is located.

Stratospheric ozone over most of the world is still about 2-3% below its 1964-1980 level. Identify two possible consequences of this ozone depletion for life on Earth.

Figure 1 shows the ozone inside the ozone hole each spring over the Antarctic between 1979 and 1993. State one chemical responsible for the trend shown in Figure 1 between 1980 and 1990.

In spring the edge of the Antarctic ozone hole sometimes passes over Punta Arenas, a city in southern Chile. Outline one impact of low concentrations of stratospheric ozone on humans.

Phytoplankton float near the surface of the Southern Ocean around Antarctica. Outline one impact of low concentrations of stratospheric ozone on these producers.

Wheat is grown in southern Argentina, under the edge of the spring ozone hole. Outline one impact of low concentrations of stratospheric ozone on plants.

Figure 1 shows the lowest ozone measured over the Antarctic each spring from 1979 to 1991. Identify one possible reason for the changes shown during the 1980s.

Figure 1 shows the largest area of the ozone hole in each year over the Antarctic between 1979 and 1993. State one chemical responsible for the trend shown in Figure 1 between 1980 and 1990.

Figure 1 shows the largest area of the ozone hole in each year from 1980 to 2000. State where the ozone hole shown in Figure 1 is located.

Figure 1 shows the mean area of the Antarctic ozone hole from 1980 to 2024. With reference to Figure 1, list two risks to human health which may have increased between 1980 and 2024.

Figure 1 shows the largest area of the Antarctic ozone hole in each year from 1980 to 1990. Identify one possible reason for the changes shown during the 1980s.

Figure 1 shows the mean area of the ozone hole over the Antarctic from 1980 to 1990. Identify one possible reason for the change shown in Figure 1.

Figure 1 shows the lowest ozone measured inside the ozone hole each spring from 1980 to 2002. State where this ozone hole is located.

Every spring since the 1980s, the ozone layer over the Antarctic has thinned so much that scientists call it a hole. Identify two possible consequences for life on Earth of the depletion of stratospheric ozone.

Figure 1 shows ozone inside the Antarctic ozone hole each spring from 1979 to 2024 (the mean of the daily lowest values). Using Figure 1, calculate the percentage decrease in ozone between 1979 and 2024, and describe the overall trend.

Southern beech forests grow in Tierra del Fuego, near the tip of South America. Outline one impact of low concentrations of stratospheric ozone on plants.

Over New Zealand, peak summer UV rose by about 12% in the 1990s as ozone thinned. Identify two possible consequences for living organisms of thinner stratospheric ozone.

Figure 1 shows the mean area of the ozone hole over the Antarctic between 1979 and 1993. State one chemical responsible for the trend shown in Figure 1 between 1980 and 1990.

Ozone-depleting substances came from many everyday products and jobs. Identify two human activities that released ozone-depleting substances into the atmosphere.