What instrument is utilized to measure wind speed?

• A. Barometer
• B. Anemometer
• C. Hygrometer
• D. Thermometer

Answer: (B)

An anemometer is specifically designed to measure wind speed. This instrument typically consists of rotating cups or blades that catch the wind, allowing it to spin. The speed of rotation correlates directly with the wind speed, enabling accurate measurements. Anemometers are commonly used in various fields, including meteorology, aviation, and marine navigation, to assess wind conditions, which are critical for safety and operational planning.

In contrast, a barometer measures atmospheric pressure, a hygrometer measures humidity in the air, and a thermometer is used to gauge temperature. Each of these instruments serves distinct purposes related to atmospheric conditions but does not provide information about wind speed.