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Fluid Mechanics Questions - All Grades

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Grade 8 Fluid Mechanics
Bernoulli's principle states that                                                              .
  1. pressure is transmitted equally through a fluid
  2. pressure increases as temperature decreases
  3. buoyant force equals weight of fluid displaced
  4. pressure in a fluid decreases as speed of the fluid increases
Grade 8 Fluid Mechanics
According to Boyle's law, if the pressure placed upon a gas is increased, then                              .
  1. the volume will increase
  2. the volume will decrease
  3. the temperature will increase
  4. the temperature will decrease
Grade 7 Fluid Mechanics
Grade 7 Fluid Mechanics
Why will a helium-filled balloon float in the air?
  1. There is more air than helium.
  2. Helium is less dense than air.
  3. Helium is as dense as air.
  4. Helium is more dense than air.
Grade 11 Fluid Mechanics
If an object is floating in a fluid, which of the following is true?
  1. The volume of the displaced fluid equals the volume of the object.
  2. The density of the fluid equals the density of the object.
  3. The density of the fluid is greater than the density of the object.
  4. The density of the fluid is less than the density of the object.
Grade 8 Fluid Mechanics
A liquid with a low viscosity, or thickness,                     .
  1. has a definite shape
  2. flows quickly
  3. flows slowly
  4. fills its container
Grade 8 Fluid Mechanics
What are the two factors that affect pressure in a fluid?
  1. volume and density
  2. weight and temperature
  3. depth and density
  4. none of the above
Grade 2 Fluid Mechanics
What does "buoyant" mean?
  1. to sink
  2. to float
  3. to be a boy
Grade 4 Fluid Mechanics
Grade 8 Fluid Mechanics
As the gas in a rigid container is heated, its                   .
  1. pressure increases
  2. volume increases
  3. pressure decreases
  4. volume decreases
Grade 6 Fluid Mechanics
What does water pressure do?
  1. It presses downward on an object.
  2. It presses upward on an object.
  3. It presses both upward and downward on an object.
  4. It does not press upward or downward on an object.
Grade 5 Fluid Mechanics
Why does oil float on water?
  1. Oil is less dense than water
  2. Oil is more dense than water
  3. Oil and water have the same density
  4. Both water and oil are liquids
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