Fluids Quiz

If the volume of an object were to triple while its mass remained the same, its density would _____.

• triple

• stay the same

• reduce to a third

At what depth does the pressure in the ocean significantly increase compared to the surface?

• At 1 meter depth

• At 10 meters depth

• Pressure increases significantly with every meter

According to Archimedes' principle, the buoyant force on an object submerged in a fluid is equal to the weight of the _____.

• object itself

• fluid

• fluid displaced by the object

• air displaced

• container holding the fluid

What happens to an object with a density less than that of water when placed in it?

• It floats

• It sinks

• It dissolves

When a ship is loaded with heavy cargo, compared to being empty, it will float _____.

• at the same level in the water

• lower in the water

• higher in the water

According to Pascal's principle, if pressure is applied to a fluid enclosed in a container, how is the pressure change experienced within the fluid?

• It is experienced equally at all points in the fluid.

• It is experienced only at the top layer of the fluid.

• It decreases as the depth increases.

• It increases as the depth increases.

• It is not transmitted to other parts of the fluid.

A hydraulic press multiplies a force by 500. This multiplication is done at the expense of _____.

• the distance through which the force acts

• the time over which the force acts, which is extended by a factor of 100

• the mechanism providing the force

• energy, which decreases by a factor of 100

• none of the above

A toy boat is floating on freshwater and it floats on liquid mercury. In which is the buoyant force greater?

• Mercury

• Fresh water

• Buoyant force is the same in both

• Impossible to determine from the information given

A raft floats in water, it also floats in syrup (density=1370 kg/m³). In which is the volume of liquid displaced greater?

• water

• syrup

• it is the same in both

• Cannot be determined from the information given

When air blows over a chimney it creates a draft pulling the air and smoke up and out. Why does this happen?

• The air above the chimney moves faster and the pressure is higher

• The air above the chimney moves faster and the pressure is lower

• The air above the chimney moves slower and the pressure is higher

• The air above the chimney moves slower and the pressure is lower