5 Questions
What is the SI unit of pressure?
Pascal (Pa)
What is gauge pressure?
Pressure relative to the ambient pressure
What is the traditional unit of pressure in the imperial and US customary systems?
Pound-force per square inch (psi)
What is the definition of pressure?
The force applied perpendicular to the surface of an object per unit area
In which unit are pressures expressed in terms of the height of a column of a particular fluid in a manometer?
Centimetre of water
Study Notes
Pressure Units and Definitions
- The SI unit of pressure is the pascal (Pa).
- Gauge pressure is the pressure relative to atmospheric pressure.
- In the imperial and US customary systems, the traditional unit of pressure is the pound per square inch (psi).
- Pressure is defined as the perpendicular force per unit area, or force per unit area, typically expressed in units of force per unit area (e.g. N/m² or Pa).
- In a manometer, pressures are expressed in terms of the height of a column of a particular fluid, typically in units of millimeters of mercury (mmHg) or inches of mercury (inHg).
Test your knowledge of pressure with this quiz! Explore the concept of pressure, gauge pressure, and various units used to express pressure, such as pascal (Pa). See how well you understand the force applied to the surface of an object per unit area.
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