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11 Cards in this Set
- Front
- Back
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Fluid |
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 |
The amount of force exerted per unit area of a surface |
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Pascal |
The so unit of pressure (symbol, Pa) |
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Atmospheric pressure |
The pressure caused by the weight of the atmosphere |
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Buoyant force |
The upward force that keeps an object immersed in or floating on a liquid |
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Archimedes' principle |
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 |
The principle that states that the pressure in a fluid decreases as the fluid's velocity increases |
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Lift |
An Upward force on an object that moves in a fluid |
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Drag |
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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Thrust |
The pushing or pulling force exerted by the engine of an aircraft or rocket |
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Pascal's principle |
The principle that states that a fluid in equilibrium contained in a vessel exerts a pressure of equal intensity in all directions |
