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You can create printable tests and worksheets from these Grade 5 Fluid Mechanics questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

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An object will sink or float because of its                 and mass.
1. floating
2. taste
3. volume
4. matter
If an item floats it has                 density than water.
1. higher
2. lower
3. the same
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. both water and oil are liquids.
Buoyancy is an object's ability to float.
1. True
2. False
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
The measure of the force with which air molecules push on a surface is called                .
1. conduction
2. convection
3. air pressure
A liquid with high viscosity will flow slowly.
1. True
2. False
A wooden stick is more                 than a penny.
1. buoyancy
2. buoyant
3. dense
4. saturated
5. gravity
Cooling honey will make it flow faster.
1. True
2. False
Equal size balls of cork, lead, and aluminum are placed in water. Which will float?
2. cork
3. aluminum
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
Adding heat to syrup makes the syrup more viscous.
1. True
2. False
A wooden stick floats on water because it is less dense than water.
1. True
2. False
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
The more viscous a liquid is the                   it is.
1. thicker
2. thinner
3. tastier
4. darker
5. none of the above
Fresh water is more dense than salt water.
1. True
2. False
An object floats on a liquid because it is less dense than the liquid.
1. True
2. False
A penny sinks in water because the penny is LESS dense than water.
1. True
2. False