Which instrument is used to show wind direction on weather maps?

• A. Barometer
• B. Wind Rose
• C. Anemometer
• D. Hygrometer

Answer: (B)

The main idea is how wind direction is represented on weather maps. A wind rose is the tool used to show where winds come from and how often they come from each direction, often summarizing this information for a location over a period. It displays directions like N, S, E, W with bars or wedges whose size or length reflects frequency (and sometimes speed), so you can quickly see the prevailing wind direction.

Barometers measure atmospheric pressure, which helps forecast changes in weather but doesn’t indicate wind direction. Anemometers measure how fast the wind is blowing. Hygrometers measure humidity. So the wind rose is the one that specifically conveys wind direction patterns on weather maps.