Which statement best describes wind and weather in a world with no atmosphere?

• A. There would be no wind and weather.
• B. There would be continuous storms.
• C. The wind would become always calm.
• D. Weather would be unpredictable.

Answer: (A)

Wind and weather depend on a surrounding medium—the atmosphere. Wind is the movement of air driven by pressure differences; without any air to move, there would be no wind at all. Weather comes from atmospheric processes like evaporation, condensation, cloud formation, and precipitation driven by heat and moisture transport. In a world with no atmosphere, those processes can’t happen, so there would be no weather phenomena. External factors such as solar wind or meteoroid impacts aren’t weather in the atmospheric sense, since they don’t involve atmospheric circulation. So the situation would be that there is no wind and no weather.