Buoyancy

Density is measure of how much (a)   is in a certain volume.

(a)   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 (a)   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.​

• neutrally buoyant

• D.

• positively buoyant

• B.

• negatively buoyant

• A.

• positively buoyant

• C.

• negatively buoyant

• E.

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

• Height

• Width

• Density

• None of the above