Multiple choice

Humidity in the air is measured by a/an:

  1. Hydrometer

  2. Hygrometer

  3. Opisometer

  4. Barometer

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A hygrometer is the instrument specifically designed to measure humidity or water vapor content in the atmosphere. A hydrometer measures liquid density, an opisometer measures curved line distances, and a barometer measures atmospheric pressure.