Which of the following scientific instruments is used to measure atmospheric
pressure?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Barometer.
- A barometer is a scientific instrument used in meteorology to measure atmospheric pressure.
- A simple barometer consists of a long glass tube (closed at one end, open at the other) filled with mercury and turned upside down into a container of mercury.
- The barometer works by balancing the mercury in the glass tube against the outside air pressure, just like a set of scales.