Buoyancy

Density is measure of how much __________ is in a certain volume.

_______________ is the tendency of certain objects to float or rise in a fluid that is denser than the object.

The force that water and other fluids exert upward on an object is called the _______________ force.

An empty plastic bottle is floating on water. How could we make it sink?

• You can’t make it sink.
• Increase its density.
• Fill with helium.
• Decrease its density.

When an object is placed in water it _____, or pushes aside the water.

• displaces
• weighs
• sinks
• floats

When the gravitational force is stronger than the buoyant force, the object _____.

• sinks
• floats
• is neutrally buoyant
• all of these

An object will rise up in a fluid if _____.

• gravity and buoyant force are equal
• density of object and fluid is equal
• the buoyant force is stronger than gravity
• the density of the object is greater than the fluid

Archimedes' Principle states the buoyant force acting on an object equals the _____ of the fluid displaced by the object.

• volume
• weight
• density
• length

Identify each item as positively buoyant, neutrally buoyant, or negatively buoyant.​

• positively buoyant

• C.

• negatively buoyant

• D.

• positively buoyant

• E.

• neutrally buoyant

• B.

• negatively buoyant

• A.

1. What factors contribute to an object's ability to float?

• Height

• Width

• Density

• None of the above