| A | B |
|---|
| Pressure | the result of a force distributed over an area |
| Pascal | the SI unit of pressure, equal to 1 newton per square meter (N/m^2) |
| Fluid | a substance or mixture that flos and has no shape of its own |
| hydraullic system | a device that uses a pressurized fluid acting on pistons of different sizes increase force |
| lift | an upward force due to a pressure difference between the top and bottom of a wing |
| buoyancy | the ability of a fluid to exert an upward force on an object placed in it |
| buoyant force | an upward force acting on an object in a fluid |
| Archimedes' principle | the equivalence of the buoyant forceon an object and the weight of the fluid displaced by the object |
