Which instrument is used to measure wind speed?

• A. Anemometer
• B. Thermometer
• C. Pan Balance
• D. Ruler

Answer: (A)

Wind speed is the rate at which air moves past a point, and an anemometer is built to measure that speed. In a typical design, wind causes cups or a vane to move, and the rotation or signal from that motion is converted into a wind-speed reading, usually in meters per second or kilometers per hour. The other tools measure things they’re not designed for: a thermometer for temperature, a pan balance for mass, and a ruler for length. So the instrument used to measure wind speed is the anemometer.