| A | B |
|---|
| 1. Fluid | anything that flows; air, water |
| 2. Viscosity | a liquid's "thickness" or resistance to flow |
| 3. Displace | the pushing of fluid away that occurs when buoyant objects take up space in a fluid |
| 4. Buoyancy | the tendency to float. Ie. Boats float in water, balloon in air. |
| 5. Force | a push or pull; measured in newtons (N). |
| 6. Buoyant force | upward force exerted by a fluid; (N) |
| 7. Density | the amount of mass in a certain volume of substance. |
| 8. Hydrometer | a device that uses buoyancy to directly measure density. |
| 9. Archimedes' Principle | the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. |
| 10. Pressure | measures the amount of force applied to a certain area. ; measured in kPa (kilopascals). |
| 11. Confined fluids | fluids in a completely enclosed container. |
| 12. Compressible | when force is exerted the volume shrinks. Ex. Gases. |
| 13. Incompressible | volume of the fluid doesn't decrease when pressure is applied. |
| 14. Barometer | instrument that measures air pressure. |
| 15. Mercury barometer | contains liquid mercury - height of the column of mercury indicates the amount of pressure being exerted. |
| 16. Aneroid barometer | barometer used in homes that does not contain liquid. |
| 17. Manometer | measures pressure of other gases; u-shaped, partially filled with fluid |
| 18. Hydraulic systems | the movement of a liquid or the force of a liquid in a closed system causes mechanisms to work. Ie. Brake system in cars. |
| 19. Valves | device that regulates the flow of a fluid. |
| 20. Pump | a device that is used to move fluids. |
