| A | B |
|---|
| Pressure | The force exerted on a fluid divided by the total area over which the force is exerted |
| Pascal | A unit of pressure equal to 1 newton per square meter. |
| Fluid | A material that can easily flow. |
| Barometer | An instrument used to measure atmospheric pressure. |
| Buoyant force | The upward force exerted force exerted by a fluid on a submerged object. |
| Archimedes' principle | The rule that the buoyant force on an object is equal to the weight of the fluid the object displaces. |
| Density | The mass of a substance contained in a unit of volume. |
| 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. |
| Hydraulic system | A system that multiplies force by transmitting pressure from a small surface area through a confined fluid to a larger surface area. |
| Bernoulli's principle | The rule that a stream of fast-moving fluid exerts less pressure than the surrounding fluid. |
| Lift | An upward force. |
