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18 Cards in this Set
- Front
- Back
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Pressure |
a force that acts over a certain area. |
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The pressure a fluid exerts is due to... |
The fact that the fluid is made up of particles that have mass and motion. |
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All ___ and ___ are fluids. |
liquids and gases |
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Which fluids exert pressure and in what direction? |
all fluids exert pressure equally and in all directions. |
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Where can fluids be pushed? |
From areas of high pressure to areas of low pressure. |
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Hydraulic Devices |
(Tarzaan) Small force on small area, big force on big area. |
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What is one example of a hydraulic device? |
Acceptable Answers: Hydraulic ladder, car breaks |
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Pressure applied to a fluid is... |
Transmitted equally in all directions throughout the fluid. |
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Buoyancy is caused by... |
the upward force of fluid pressure. |
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Archimede's Principle states that... |
The buoyant force on an object is equal to the weight of the fluid displaced by the object. |
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Pressure varies in... |
Depth. |
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What is the formula for pressure? |
P=f/a (Pressure=force/area) |
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An object in a fluid floats when... |
the buoyant force on the object is greater than or equal to the weight of the object. |
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What is the formula for density? |
D=M/V |
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An object will float if... |
...it's density is less than the density of the fluid |
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Bernoulli's Principle |
The pressure in a moving stream of fluid is less than the pressure in the surrounding fluids. |
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The faster a fluid moves, |
the less pressure it exerts. |
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What are the 3 gas laws? |
^Temperature=^Pressure (Direct) ^Volume=⇩ Pressure (Inverse) ^# of molecules= ^Pressure (Direct) |
