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Fluid Mechanics (Grade 7)

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Fluid Mechanics

1. 
Which one of the following is NOT considered a fluid?
  1. oil
  2. air
  3. sand
  4. liquid nitrogen
2. 
               is the mass per unit volume of a substance
  1. mass
  2. weight
  3. density
  4. chemistry
3. 
Whose principal states that the buoyant force on an object is equal to the weight of the fluid displaced by the object?
  1. Pascal
  2. Bernoulli
  3. Archimedes
4. 
Whose principle states the pressure exerted by a moving stream of fluid is less than the pressure of the surrounding fluid?
  1. Bernoulli
  2. Pascal
  3. Archimedes
5. 
Whose principal states that when force is applied to a confined fluid, an increase in pressure is transmitted equally to all parts of the fluid?
  1. Bernoulli
  2. Pascal
  3. Newton
6. 
The upward force of water or air that keeps an object afloat is called                .
  1. matter
  2. solid
  3. gas
  4. buoyancy
7. 
Fluid pressure is always directed
  1. up.
  2. down.
  3. sideways.
  4. in all directions.
8. 
According to Boyle's law, if the pressure placed upon a gas is increased,
  1. the volume will increase.
  2. the volume will decrease.
  3. the temperature will increase.
  4. the temperature will decrease.
9. 
Air pressure is measured with a(n)
  1. thermometer
  2. barometer
  3. anemometer
  4. psychrometer
10. 
The force pushing on a surface divided by the area of that surface.
  1. pressure
  2. gravity
  3. inertia
11. 
What is the density of an object that has a mass of [math]184 g[/math] and a volume of [math]50 cm^3[/math]?
  1. [math]9200 g // cm^3[/math]
  2. [math]3.68 g // cm^3[/math]
  3. [math].271 g // cm^3[/math]
  4. [math]3.74 g // cm^3[/math]
12. 
As the pressure of a gas at 2 atm is changed to 1 atm at constant temperature, the volume of the gas
  1. decreases
  2. increases
  3. remains the same
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