Atmospheric pressure is measured with a/an _______ and is commonly expressed in _______ .
A. anemometer, kilometers per hour
B. barometer, millibars
C. thermometer, degrees Celsius
D. hygrometer, a percentage
Atmospheric pressure is measured with a barometer. It is commonly expressed in millibars. Atmospheric pressure is the force per unit area exerted on a surface by the weight of air above that surface in the atmosphere of Earth.
