click below
click below
Normal Size Small Size show me how
Science Chapter 13
Vocab
| Term | Definition |
|---|---|
| pressure | the result of a force distributed over an area |
| pascal | the SI unit for pressure |
| 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 | the pressure difference between the top and the bottom of the wing creates an upward force |
| buoyancy | the ability of a fluid to exert an upward force of an object placed in it |
| buoyancy force | this upward force, which acts in the opposite direction of gravity |
| Archimedes' priniciple | the buoyant force on an object is equal to the weight of the fluid displaced by the object |