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11 Cards in this Set
- Front
- Back
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Fluid
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A nonsolid state of matter in which the atoms or molecules are free to move past each other, as in a gas or liquid
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Pressure
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The amount of force exerted per unit area of a surface
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Pascal
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The SI unit of pressure (symbol, Pa)
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Atmospheric Pressure
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The pressure caused by the weight of the atmosphere
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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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Archimedes' Principle
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The principle that states that 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 that states that the pressure in a fluid decreases as the fluid's velocity increases
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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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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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Pascal's Principle
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The principle that states that a fluid in equilibrium contained in a vessel exerts a pressure of equal intensity in all directions
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