| A | B |
|---|
| fluid | any matter that can flow and takes the shape of its container (can be liquid or gas) |
| pressure | the amount of force exerted on a given area |
| atmospheric pressure | the pressure caused by the weight of the atmosphere |
| pascal | the SI unit for pressure |
| density | the amount of matter in a certain volume, or mass per unit volume |
| Pascal's principle | a change in pressure at any point in an enclosed fluid will be transmitted equally to all parts of that fluid |
| buoyant force | the upward force that fluids exert on all matter |
| Archimedes' principle | the bouyant force of an object in a fluid is an upward force equal to the weight of the volume of fluid that object displaces |
| Bernoulli's principle | as the speed of a moving fluid increases, its pressure decreases |
| thrust | the forward force produced by an airplane's engine |
| drag | the force that opposes or restricts motion in a fluid |
