AP Fluids Review

Front

What is buoyant force?

Back

The upward force exerted by a fluid on an object that is submerged or floating in it, equal to the weight of the fluid displaced by the object.

Front

When is the buoyant force on an object the greatest?

Back

When the object is completely submerged in the fluid.

Front

What is the formula for pressure in a fluid?

Back

Pressure (P) = Density (ρ) × Gravitational acceleration (g) × Height (h) of the fluid column.

Front

What is absolute pressure?

Back

The total pressure at a point in a fluid, including atmospheric pressure and the pressure due to the fluid column above it.

Front

How does fluid pressure change with depth?

Back

Fluid pressure increases with depth due to the weight of the fluid above.

Front

What is the relationship between fluid density and buoyancy?

Back

An object will float if its density is less than the density of the fluid; it will sink if its density is greater.

Front

What happens to fluid pressure when a fluid is in a container with varying cross-sectional areas?

Back

According to Bernoulli's principle, as the speed of the fluid increases, the pressure decreases.

Front

What is Pascal's principle?

Back

A change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and to the walls of its container.

Front

What is the significance of the height of a fluid column in determining pressure?

Back

The height of the fluid column directly affects the pressure at the bottom; greater height results in greater pressure.

Front

What is the principle of Archimedes?

Back

An object submerged in a fluid experiences a buoyant force equal to the weight of the fluid it displaces.