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Fifth Grade (Grade 5) Fluid Mechanics Questions

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Grade 5 Fluid Mechanics
Items that float have a property called                .
  1. Weight
  2. Buoyancy
  3. Density
Grade 5 Fluid Mechanics
If an item floats it has                 density than water.
  1. Higher
  2. Lower
  3. The Same
Grade 5 Fluid Mechanics
A liquid with high viscosity will flow slowly.
  1. True
  2. False
Grade 5 Fluid Mechanics
The measure of the force with which air molecules push on a surface is called
  1. conduction
  2. convection
  3. air pressure
  4. radiation
Grade 5 Fluid Mechanics
100 liters of salt water will weigh more than 100 liters of fresh water.
  1. True
  2. False
Grade 5 Fluid Mechanics
Water pressure
  1. presses downward on an object
  2. presses upward on an object
  3. presses both upward and downward on an object
  4. does not press upward or downward on an object
Grade 5 Fluid Mechanics
Oil floats on water because
  1. Oil is less dense than water
  2. Oil is more dense than water
  3. Oil and water have the same density
  4. The same volume of oil weighs more than that of water
  5. Both water and oil are liquids
Grade 5 Fluid Mechanics
Equal size balls of cork, lead and aluminum are placed in water. Which will float?
  1. lead
  2. cork
  3. aluminum
Grade 5 Fluid Mechanics
An object is buoyant in water because
  1. water pressure increases with depth
  2. water pressure decreases with depth
  3. the object is heavy
  4. the water pressure stays the same
Grade 5 Fluid Mechanics
If an object floats on a liquid,                                         force of the liquid                                         on the object is                                         than the force of                                         pulling the object down.
  1. dense, pushing up, less, nature
  2. buoyant, pulling down, greater, gravity
  3. buoyant, pushing up, greater, gravity
  4. buoyant, pushing up, less, gravity
  5. dense, pushing up, greater, gravity
Grade 5 Fluid Mechanics
A wooden stick is more                 than a penny.
  1. buoyancy
  2. buoyant
  3. dense
  4. saturated
  5. gravity
Grade 5 Fluid Mechanics
If an object sinks in a liquid, the force of gravity is LESS than the force of buoyancy pushing up on the object.
  1. True
  2. False
Grade 5 Fluid Mechanics
Salt water has                 buoyancy than fresh water.
  1. less
  2. greater
  3. equal or same
Grade 5 Fluid Mechanics
Cooling honey will make it flow faster.
  1. True
  2. False
Grade 5 Fluid Mechanics
If an object sinks in a liquid, the force of gravity is           greater           than the force of buoyancy           pushing          up on the object.
Grade 5 Fluid Mechanics
The slower the rate of flow is, the        more        viscous is the liquid.
Grade 5 Fluid Mechanics
A wooden stick floats on water because it is less dense than water.
  1. True
  2. False
Grade 5 Fluid Mechanics
An object floats on a liquid because it is less dense than the liquid.
  1. True
  2. False
Grade 5 Fluid Mechanics
Honey is more viscous than maple syrup. Therefore the honey will flow                   the maple syrup.
  1. faster than
  2. slower than
  3. as fast as
  4. None of the above
Grade 5 Fluid Mechanics
Any object in a liquid is naturally pulled downwards by the force of gravity.
  1. True
  2. False
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