Which is used in an airplane to measure altitude?
A)A mercury barometer.
B)An anemometer.
C)A hygrometer.
D)An aneroid barometer.

Question

Quizplus · Accepted Answer

An aneroid barometer is used in airplanes to measure altitude. It measures changes in air pressure caused by changes in altitude. A mercury barometer is not practical for use in airplanes, as it is large and cumbersome. An anemometer measures wind speed, and a hygrometer measures humidity levels.

Which Is Used in an Airplane to Measure Altitude