Western Governors University (WGU) GEOG1312 D199 Introduction to Physical and Human Geography Practice Exam

Climate change is defined as long-term alterations in temperature, precipitation, and other atmospheric conditions that persist over extended periods, often measured in decades to centuries. This definition distinguishes climate change from short-term weather variations, which are the immediate and often unpredictable changes in atmospheric conditions that occur over days and weeks.

Understanding climate change requires looking at trends in weather data collected over significant timeframes rather than focusing on momentary weather events. For example, while a particular day might be unusually hot or cold, these fluctuations do not necessarily indicate a change in climate. In contrast, the identification of a gradual increase in average global temperatures over several decades would be considered evidence of climate change. This underscores the importance of understanding the difference between temporary weather patterns and the overarching, slower-moving trends that characterize climate dynamics.