Which instrument is used to measure air pressure?

Which instrument is used to measure air pressure?

• A. Barometer
• B. Thermometer
• C. Anemometer
• D. Hygrometer

Answer: (A)

Air pressure is the force of the air pushing on surfaces, and a barometer is the instrument that measures that pressure. When the air is dense and presses harder, the barometer shows higher pressure; when the air is lighter and pressure drops, it shows lower pressure, which helps predict weather. The other tools measure different things: a thermometer gauges temperature, an anemometer measures wind speed, and a hygrometer tracks humidity.

Air pressure is the force of the air pushing on surfaces, and a barometer is the instrument that measures that pressure. When the air is dense and presses harder, the barometer shows higher pressure; when the air is lighter and pressure drops, it shows lower pressure, which helps predict weather. The other tools measure different things: a thermometer gauges temperature, an anemometer measures wind speed, and a hygrometer tracks humidity.