Pressure and Density of Fluids + The Buoyant Force

A _________ is any substance that can flow and take the shape of the container that holds it.

The volume of a liquid always changes, regardless of the container.

__________ is the amount of force per unit area applied to an object’s surface.

All fluids (liquids and gases) apply pressure.

The unit measurement for pressure is Newton (N)

A fluid applies pressure parallel to all sides of an object in contact with the fluid.

The ratio of the weight of all the air above you to your surface area is ______________.

On land, atmospheric pressure depends on your elevation.

Underwater, the pressure depends on your elevation.

If the volume of two fluids is the same, the fluid that weighs more is less denser.

You can calculate density with the equation D = M x V

You can calculate Pressure with the equation P =F/A.

A buoyant force is a __________ force applied by a fluid on an object in the fluid.

A buoyant force acts on any object in a liquid.

The buoyant force depends on an object’s volume.

The greater the volume of an object in a fluid, the less the buoyant force on it.

Archimedes’ principle states that the buoyant force on an object is equal to the weight of the fluid that the object displaces.

The buoyant force is greater on the billard ball than on the tennis ball or the billiard ball because the balloon displaces more water.

An object floats if the buoyant force acting on it is equal to the object’s weight.

When the buoyant force on an object is more than the gravitational force, the object sinks.