| Term | Definition |
|---|
| fluid | any material that can flow and that takes the shape of its container |
| pressure | the amount of force exerted on a given area, expressed in pascals |
| pascal | the SI unit of pressure; equal to the force of 1N exerted over an area of one square meter |
| atmospheric pressure | the pressure caused by the weight of the atmosphere |
| density | the amount of matter in a given space; mass per unit volume |
| pascals principle | states that a change in pressure in an enclosed fluid is transmitted equally to all parts of that fluid |
| buoyant force | the upward force that fluids exert on all matter; buoyant force opposes gravitational force |
| archimedes principle | the principle states that the buoyant force on an object in a fluid is an upward force equal to the weight of the volume of a fluid that the object displaces |
| bernoulli's principle | states that the speed of a moving fluid increases as its pressure decreases. |
| lift | an upward force on an object that opposes the downward pull of gravity; differences in pressure above and below the object contribute to lift |
| thrust | the forward force produced by an airplane's engines; thrust opposes drag |
| drag | the force that opposes or restricts motion in a fluid; drag opposes thrust |
Combine with other sets
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