Question 30

Higher average temperatures in cities than in surrounding countryside because of pavement and buildings in cities

This example illustrates how human activity, particularly urban development, contributes to climate change by creating heat islands. The concentration of pavement and buildings in cities absorbs and retains heat, leading to higher average temperatures compared to rural areas.

A) Higher average temperatures in cities than in surrounding countryside because of pavement and buildings in cities

This option correctly identifies a phenomenon known as the urban heat island effect, which is a direct result of human activity. The construction materials used in urban areas, such as asphalt and concrete, absorb more heat than natural landscapes, causing cities to become significantly warmer. This increase in temperature can contribute to broader climate change impacts.

B) Differences in average rainfall because of matter in the air from volcanic activity

This option refers to natural climate events rather than human-induced change. While volcanic activity can influence climate patterns temporarily, it is not directly caused by human activity and is thus not an example of anthropogenic climate change.

C) Higher average temperatures in the summer than in the winter

This statement describes a natural seasonal phenomenon rather than an example of climate change. Seasonal temperature variations occur regardless of human influence and do not illustrate the impact of human activities on the climate.

D) Differences in average rainfall from month to month

This option addresses natural variability in precipitation patterns, which can occur due to various climatic factors and do not specifically relate to human-induced climate change. Monthly rainfall differences are part of the natural climate system and not a direct consequence of human actions.

Conclusion

Option A is the only choice that highlights a clear example of climate change driven by human activity, specifically through urbanization and its effects on local temperatures. Other options either describe natural phenomena or seasonal variations that do not stem from human influence, thus failing to illustrate anthropogenic climate change effectively.