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Fluid Mechanics Questions - All Grades

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Grade 2 Fluid Mechanics
What does "buoyant" mean?
  1. to sink
  2. to float
  3. to be a boy
Grade 10 Fluid Mechanics
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
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 3 Fluid Mechanics
What word tells how fast a liquid flows?
  1. transparent
  2. viscosity
  3. water
Grade 6 Fluid Mechanics
Grade 10 Fluid Mechanics
Grade 9 Fluid Mechanics
When an object is submerged in a liquid, the fluid pressure is always strongest                                                    .
  1. On the bottom of the object because it is deeper
  2. On the top of the object because it is heavier
  3. The pressure is equal all the way around the object
  4. When balanced by gravity
  5. On more dense objects
Grade 6 Fluid Mechanics
What is a surface tension?
  1. The 'skin' that is formed as molecules on the surface of water stick together.
  2. The ripples that form when you touch the surface of water.
  3. The separation of molecules on the surface of water.
Grade 1 Fluid Mechanics
Which toy needs air to be fun?
  1. truck
  2. see-saw
  3. balloon
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