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Fluid Mechanics Questions - All Grades

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Grade 3 Fluid Mechanics
An object that has high buoyancy floats.
  1. True
  2. False
Grade 5 Fluid Mechanics
A liquid with high viscosity will flow slowly.
  1. True
  2. False
Grade 5 Fluid Mechanics
A wooden stick is more                 than a penny.
  1. buoyancy
  2. buoyant
  3. dense
  4. saturated
  5. gravity
Grade 1 Fluid Mechanics
A tree branch will                 in water.
  1. float
  2. sink
  3. dissolve
Grade 1 Fluid Mechanics
Which object will sink in a bowl of water?
  1. a pencil
  2. a metal spoon
  3. a plastic spoon
  4. a balloon
Grade 5 Fluid Mechanics
How can you make oil flow faster?
  1. Cool it by putting it in the fridge.
  2. Heat it up.
  3. Stir it a few times (but not too much).
  4. None of the above
Grade 9 Fluid Mechanics
A large truck passes a car on the highway. According to Bernoulli's principle, which of the following should occur?
  1. Pressure decreases between the vehicles, so the car and truck move slightly apart.
  2. Pressure decreases between the vehicles, so the car and truck move slightly together.
  3. Pressure increases between the vehicles, so the car and truck move slightly apart.
  4. Pressure increases between the vehicles, so the car and truck move slightly together.
Grade 6 Fluid Mechanics
Salt water has                 buoyancy than fresh water.
  1. less
  2. greater
  3. equal or same
Grade 3 Fluid Mechanics
A "low floater" is an object that
  1. floats above the water level.
  2. floats in the air.
  3. floats at the water level.
  4. does not float.
Grade 3 Fluid Mechanics
A "high floater" is an object that
  1. floats at the water level.
  2. floats above the water level.
  3. floats below the water level.
  4. does not float.
Grade 9 Fluid Mechanics
Two tall buildings are separated by a narrow alleyway. On a windy day, wind gusts move very quickly through the alley. If the buildings are not constructed properly, which of the following could be a concern when this occurs?
  1. The buildings' windows could be blown outward into the alley because of air pressure differences.
  2. The buildings' windows could be blown inward into the building because of air pressure differences.
  3. The buildings' windows could be blown outward into the alley because of temperature differences.
  4. The buildings' windows could be blown inward into the building because of temperature differences.
Grade 11 Fluid Mechanics
Which of the following is a correct statement of Bernoulli’s principle?
  1. The pressure in a fluid decreases as the fluid’s velocity increases.
  2. The pressure in a fluid increases as the fluid’s velocity increases.
  3. The density of a fluid decreases as the fluid’s velocity increases.
  4. The density of a fluid increases as the fluid’s velocity increases.
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