Which instrument measures humidity levels in percentage?

Which instrument measures humidity levels in percentage?

• A. Hygrometer
• B. Pictogram
• C. Volume
• D. Barometer

Answer: (A)

Humidity is the amount of water vapor in the air, and it’s usually given as relative humidity, a percentage. A hygrometer is the instrument that senses moisture in the air and displays that value as a percent, like 30%, 60%, or 90%. Some hygrometers use a flexible material that changes with humidity, while others use electronic sensors to give a digital readout, but both convey how humid the air is in percent. The other options aren’t used to measure humidity: a pictogram is just a graphic symbol, a volume refers to how much space something occupies, and a barometer measures atmospheric pressure.

Humidity is the amount of water vapor in the air, and it’s usually given as relative humidity, a percentage. A hygrometer is the instrument that senses moisture in the air and displays that value as a percent, like 30%, 60%, or 90%. Some hygrometers use a flexible material that changes with humidity, while others use electronic sensors to give a digital readout, but both convey how humid the air is in percent. The other options aren’t used to measure humidity: a pictogram is just a graphic symbol, a volume refers to how much space something occupies, and a barometer measures atmospheric pressure.