Buoyancy and Floating Quiz

What is buoyancy?

• The weight of water

• The ability to float

• The force of gravity

• The shape of an object

What did Archimedes discover about buoyancy?

• Objects sink until they float

• Objects always sink

• Objects always float

• Objects have no effect on water

What happens when a boat displaces water?

• The water level stays the same

• The water level rises

• The water level decreases

• The water turns into steam

What happens to the buoyancy of a hot air balloon when the air inside is heated?

• It decreases

• It decreases

• It increases

• It becomes negative

What is the term for an object that neither sinks nor floats?

• Negatively buoyant

• Positively buoyant

• Neutrally buoyant

• Buoyancy is not applicable

What is the purpose of a buoyancy compensator in scuba diving?

• To control the depth of the diver

• To provide oxygen to the diver

• To protect the diver from cold water

• To measure the weight of the diver

What is the principle of buoyancy?

• An object will float if it is lighter than the fluid it displaces

• An object will float if it is heavier than the fluid it displaces

• An object will float if it is the same weight as the fluid it displaces

• An object will float if it is shaped like a boat

What is the function of a swim bladder in fish?

• To control their buoyancy

• To help them breathe underwater

• To protect their internal organs

• To swim faster

What happens to the buoyancy of a submarine when it fills its ballast tanks with water?

• It increases

• It decreases

• It stays the same

• It becomes negative

Why does a metal ship float even though metal is denser than water?

• Because the ship is hollow and contains air

• Because the ship is painted with a special paint

• Because the ship is moving

• Because the ship is shaped like a boat