Fluid Mechanics Quiz

Match the following descriptions with the correct term that describes the force keeping the toy boat afloat.

• Describes a contributing factor but not the force itself

• The process of the toy boat displacing water

• Describes an opposite action that does not result in flotation

• The weight of the water displaced by the toy boat

• Correctly identifies the force keeping the boat afloat

• The downward force exerted by the toy boat on the water

• Describes an action rather than a force

• The upward force exerted by the water on the toy boat immersed in it

While experimenting in a physics lab, Daniel drops a metal cube into a container filled with water. Which factor does NOT affect the buoyant force acting on the metal cube?

• The weight of the water displaced by the cube

• The volume of water displaced by the cube

• The density of the metal cube

• The color of the metal cube

Joseph drops a solid gold statue into a large container full of water. According to Archimedes' Principle, the buoyant force on the statue submerged in the water is equal to what?

• The density of the water

• The weight of the water displaced by the statue

• The volume of the statue

• The weight of the statue

Imagine Frederick has a toy boat that displaces a volume of water with a weight greater than its own weight. The toy boat will (a)   .

• The toy boat will sink
• The toy boat will neither sink nor
• The toy boat will dissolve in the w
• The toy boat will float

Why does a steel marble sink while an inflatable beach ball floats when both are placed in a swimming pool?

• The beach ball contains water inside it

• The steel marble displaces less water because it is denser

• The beach ball displaces more water due to its density

• The steel marble is larger than the beach ball

What principle explains why a helium-filled balloon rises in the air?

• The balloon is lighter than air

• The balloon displaces air that weighs more than the balloon itself

• The balloon creates an upward lift

• The balloon has a higher density than air

If a person wears a life jacket and floats in a lake, what does the buoyant force acting on the person equal?

• The weight of the person

• The weight of the water displaced by the person and the life jacket

• The volume of the person and the life jacket

• The density of the lake water

Why does a ship made of steel float in water while a solid steel block sinks?

• The ship is coated with a special material

• The ship displaces a volume of water with a weight greater than its own

• The density of the ship is less than that of water

• The ship is lighter than water

As it is submerged deeper into the water, the buoyant force on an object (a)   .

• It decreases
• It remains the same
• It increases until the object is fu
• It varies depending on the water te

Match the following statements about the density of an object compared to water with the correct condition.

• Comparing densities is not applicable

• The density of the object is equal to the density of water

• An object is suspended within the water

• The density of the object is less than the density of water

• An object sinks in water

• The density of the object is greater than the density of water

• An object floats on the water's surface

• The density of the object and water cannot be compared