| A | B |
|---|
| Pressure | Result of a force distributed over an area |
| Pressure | Calculated by dividing the force by the area over which the force acts |
| Pascal | SI unit of pressure |
| Pascal | Newtons per square meter |
| Increases | Water pressure ________ as depth increases. |
| Constant | The pressure in a fluid at any given depth is ___________ |
| Does not | The shape of the container and the area of the bottome of container ________ affect fluid pressure |
| depth and type of fluid | For a fluid that is not moving, _____________________ are the two factors that determine the pressure |
| decreases | Air pressure __________ as the altitude |
| Increases | Air pressure decreases as the altitude ___________ |
| pascal's principal | Change in pressure at any point in a fluid is transmitted equally and unchanged in all directions throughout the fluid |
| Hydraulic system | A device that uses pressurized fluid acting on pistons of different sizes to change a force |
| Bernoulli's principal | As the speed of a fluid increases, the pressure within the fluid decreases |
| increases | As the speed of a fluid ___________ the pressure within the fluid decreases |
| decreases | As the speed of a fluid increases, the pressure within the fluid ______________ |
| lift | Upward force |
| yaw | Turning left or right on an airplane |
| pitch | Tilting from back to front in an airplane |
| Roll | One wing tilting up, and the other down in an airplane |
| flap | affects lift and drag in an airplane |
| rudder | Controls yaw in an airplane |
| Elevator | Controls pitch in an airplane |
| Aileron | Controls roll in an airplane |
| Spoiler | Increases drag in an airplane |
| Buoyancy | Ability of a fluid to exert an upward force on an object placed in it |
| Buoyancy | Results in apparent loss of weight of an object in a fluid |
| Buoyant force | Upward force on an object in a liquid in the opposite direction of gravity |
| Archimedes' principle | The buoyant force on an object is equal to the weight of the fluid displaced by the object |
