| 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 |
| fluid | a substance that assumes the shape of its container |
| hydraulic system | a device that uses pressurized fluid acting on pistons of different sizes to change a force |
| lift | an upward force due to a pressure difference between the top and bottom of a wing |
| buoyancy | an upward force exerted by a fluid on an object placed in it |
| buoyant force | the upward force which acts in the opposite direction of gravity |
| Archimedes' principle | the principle by which the buoyant force on an object is equal to the weight of the fluid displaced by the object |
| fluid | any material that can flow |
| fluid | examples are gases and liquids |
| Bernoulli's principle | The rule that a stream of fastmoving fluid exerts less pressure than the surrounding fluid |
| Pascal's principle | The rule that when force is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the fluid |
