Question

The instrument used for recording atmospheric pressure is _________.

Answer 1

1. The pressure exerted by air per unit area is called “atmospheric pressure”
2. A barometer is used to measure “atmospheric pressure” at a place.
3. A barometer works by balancing the weight of mercury in the glass tube against the atmospheric pressure.
4. The mercury in the barometer rises if the weight of the mercury is less than the atmospheric pressure.
5. The mercury in the barometer falls if the weight of the mercury is more than the atmospheric pressure.

Hence, the instrument used for measuring atmospheric pressure is a barometer.