Physics+Chapter+3

=**Chapter 3 Review**= media type="custom" key="7396993"
 * Vocab flash cards -**
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= 3-1 Fluid Pressure = Air pressure interactive : [] = 3-2 Hydraulic Devices =
 * ==Fluid Pressure is the force per unit area exerted by a fluid.==
 * ==The pressure a fluid exerts is due to the face that the fluid is masde up of prticles that have mass and motion.==
 * ==All liquids and gases are fluids. All fluids exert pressure equally in all directions.==
 * ==Fluids can be pushed from areas of high pressure to areas of lower pressure.==


 * ==**Pressure applied to a fluid is trasmitted equally in all directions through the fluid.**==
 * ==In hydraulic devices, a small force acting on a small area is multiplied into larger force acting on a larger area.==

More information on how hydraulic systems work: Hydraulic and Pneumatic Video Part 1: [] Hydraulic and Pneumatic Video Part 2: []

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media type="custom" key="7553355"media type="custom" key="7553377" = 3-3 Pressure and Gravity =

Facts about pressure and ocean depths: [] Bends info: []
 * ==As a result of gravity, the pressure a liquid exert increases as the depth increases.==
 * ==Air pressure decreases as altitude increases.==

Bends info: [] = 3-4 Buoyancy =

media type="custom" key="7553295"media type="custom" key="7553281"media type="custom" key="7553399" Why does a rubber duck float? []
 * ==Buoyancy is the phenomenon caused by the upward force of fluid pressure.==
 * ==The buoyant force on an ovbject is equal to the weight of the fluid displaced by the object. This relationship is called Archimeded' Principle.==
 * ==An object floats in a fluid when the buoyant force on the object is greater than or equal to the weight if the object.==
 * ==Density is ther ration of the mass of an object to its volume (D=M/V).==
 * ==An object will floar in a fluid if its density is less than the density of the fluid.==

Interactive Buoyancy Lab: []

Archimedes' Principle Interactive Website: []

Buoyancy brainteaser: [] = 3-5 Fluids in Motion = The very handsome Daniel Bernoulli Bernoulli Animation: [] media type="custom" key="7553413"
 * ==Bernoulli's Principle states that pressure in a moving stream of fluid is less than the pressure in the surrounding fluid.==
 * ==The faster a fluid moves the less pressure it exerts.==