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11 Cards in this Set
- Front
- Back
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pascal
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The SI unit of pressure (symbol, Pa)
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Pascal's principle
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the principle that says that a fluid in equilibrium contained in a vessel exerts a pressure of equal intensity in all directions.
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pressure
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The amount of force exerted per unit area of a surface.
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atmospheric pressure
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The pressure caused by the weight of the atmosphere.
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Archimede's principle
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The principle that says the buoyant force on an object in a fluid is an upward force equal to the weight of the volume of fluid that the object displaces.
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Bernoulli's principle
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The principle says that the pressure in a fluid decreases as the fluid's velocity increases.
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buoyant force
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The upward force that keeps an object immersed in or floating on a liquid.
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drag
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A force parallel to the velocity of the flow; it opposes the direction of an aircraft and, in combination with thrust, determines the speed of the aircraft.
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fluid
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A non-solid state of matter, gas or liquid. Molecules move freely past each other.
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lift
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An upward force on an object that moves in a fluid
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thrust
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The pushing or pulling force exerted by the engine of an aircraft or rocket.
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