Which instrument measures atmospheric pressure?
Show answer & explanation
Correct answer: A
Explanation
Solution: The correct answer is Barometer.
Explanation:
☛ A Barometer is a scientific instrument used to measure atmospheric pressure.
☛ It was invented by the Italian physicist Evangelista Torricelli in the year 1643.
☛ Atmospheric pressure is measured in units such as Pascal (Pa), bar, millibar, and torr (or millimeters of mercury, mmHg).
☛ A sudden and rapid fall in the barometric level indicates an oncoming storm or cyclone.
☛ A gradual fall in the reading indicates rain, while a gradual rise indicates clear and fair weather.
Extra Exam-Relevant Facts:
☛ Thermometer: Used to measure temperature.
☛ Ammeter: Used to measure electric current flowing in a circuit.
☛ Hygrometer: Used to measure the humidity or moisture content in the atmosphere.
☛ Aneroid Barometer: A type of barometer that does not use any liquid to measure pressure.
Important One-Liners for Upcoming Exams:
☛ Who invented the mercury barometer? → Evangelista Torricelli
☛ What does a sudden fall in the barometric reading indicate? → An approaching storm
☛ Which instrument is used to measure the purity of milk? → Lactometer
☛ Which instrument is used to measure wind speed? → Anemometer
☛ Which device is used to measure very high temperatures? → Pyrometer