Buoyancy and Archimedes Principle

What is buoyancy?

• The force exerted by gravity on a submerged object

• The force exerted by an object on a fluid

• Upward force exerted by a fluid on a submerged object

• The force exerted by a fluid on a floating object

Who discovered the principle of buoyancy?

• Isaac Newton

• Albert Einstein

• Galileo Galilei

• Archimedes

What is the formula to calculate buoyant force?

• Buoyant force = Weight of the fluid displaced

• Buoyant force = Mass of the object

• Buoyant force = Volume of the object

• Buoyant force = Density of the fluid

When an object is fully submerged in a fluid, the buoyant force is equal to:

• weight of the object

• weight of the fluid displaced by the object

• density of the fluid

• volume of the object

Which of the following objects will float in water?

• Brick, concrete, steel

• Rubber, paper, fabric

• Metal, glass, stone

• Wood, plastic, cork

What is the principle behind a hot air balloon?

• Friction

• Gravity

• Magnetism

• Buoyancy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What happens to the buoyant force when an object is partially submerged in a fluid?

• The buoyant force becomes zero.

• The buoyant force increases.

• The buoyant force remains the same.

• The buoyant force decreases.

Which law states that the buoyant force on an object is equal to the weight of the fluid displaced by the object?

• Newton's third law

• Boyle's law

• Ohm's law

• Archimedes' principle

What is the unit of density?

• g/cm^3

• lbs/in^3

• kg/m^3

• m/s^2

Which of the following factors does NOT affect buoyancy?

• temperature

• density

• shape

• color