CHAPTER 5: FLUIDS

Pascal's principle is applied on......

• liquids only

• gases only

• both gases and liquids

• solids only

The amount of force pushing on an area is the definition of....

• Fluid

• Pressure

• Barometer

• Viscosity

In hydraulic presses that work according to Pascal's principle, the quantity which is being multiplied is......

• pressure

• work done

• force

• velocity

If the weight of the water displaced is the same as the weight of the object placed in the water, the object will sink.

• True

• False

The ship was able to float in the water because its weight was the same as the weight of the water it displaced.

• True

• False

Hot air balloons float because hot air displaces cool air in the atmosphere.

• True

• False

Archimedes' Principle states that... 

• The buoyant force acting on an object will always be equal. 

• The buoyant force acting on an object equals the volume of the fluid displaced by the object. 

• The buoyant force acting on an object equals the weight (force of gravity) of the fluid displaced by the object.

According to Bernoulli's Principle, when the wind speed is high, wind pressure is ________

• high

• low

The faster a fluid moves, the lower the pressure is in the moving fluid compared to the fluid not moving as fast. This is called......

• Newton's Laws

• Bernoulli's Principle

• Wright Brothers Priciple

According to Bernoulli's principle, by curving the blades, the wind is split so _______ speed wind travels above the blade and _________ speed wind travels below the blade. This causes more pressure ________ the blade generating _______.

• high; low; under; lift

• high; low; above; lift

• low; high; under; lift

• low; high; above; lift