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Science CH.7 Vocab.
Choices science level six chapter 7:Fluids vocabulary
Term | Definition |
---|---|
pressure | the amount of force exerted on a certain area |
Archimedes' Principle | a submerged object is pushed upward by a force equal to the weight of the fluid it displaces |
buoyant force | the upward force exerted by a fluid |
Pascal's Principle | pressure is transferred equally throughout a fluid in all directions |
hydraulic system | a system that uses fluids to increase or transfer force |
air pressure | the force exerted by air |
Bernoulli's Principle | pressure decreases as a fluid speeds up |
airfoil | an object whose shape contributes to lift |
lift | the force on an airplane that pushes it upward |
thrust | the downward force on an airplane that pushes it forward |
weight | the downward force on an object caused by gravity |
drag | the backward force on an airplane caused by friction |