What term describes long-term atmospheric conditions in a region?

• A. Weather
• B. Climate
• C. Front
• D. Circulation

Answer: (B)

Long-term patterns in the atmosphere over a region are described by climate. Weather covers day-to-day conditions—what it's like outside today or this week—while climate looks at averages and typical ranges over many years, giving a sense of what to expect in the long run. A front is a boundary between air masses and drives weather changes, not a description of long-term behavior. Circulation refers to the large-scale movement of air shaping patterns, but it’s the averaging over time that defines climate. So, the term that best fits long-term atmospheric conditions in a region is climate.