Which statement best distinguishes weather from climate?

• A. Weather is long-term averages; Climate is short-term conditions.
• B. Weather is solar radiation; Climate is atmospheric composition.
• C. Weather is short-term atmospheric conditions; Climate is long-term averages.
• D. Weather and Climate both refer to short-term conditions.

Answer: (C)

Weather describes the day-to-day state of the atmosphere—things like temperature, humidity, precipitation, wind, and cloudiness over hours to a few days. Climate, on the other hand, is about long-term behavior: the typical conditions and averages (and the distribution of those conditions) over many years, usually decades. So the best statement is that weather is short-term atmospheric conditions, while climate is long-term averages.

The other ideas mix up timescales or definitions. Weather isn’t simply long-term averages, and climate isn’t just short-term conditions. Some statements point to drivers like solar radiation or focus on atmospheric composition, which aren’t the defining distinction. The crucial point is the timescale and the statistical summary: weather = current conditions, climate = long-term expectations.