PS 13.3 Formative

Front

What does the strength of the buoyant force acting on an object in a fluid depend on?

Back

The strength of the buoyant force depends on the object's volume.

Front

What does a submerged submarine alter to rise or fall in the water?

Back

A submerged submarine alters its buoyancy to rise or fall in the water.

Front

What unit is often used to express density?

Back

The unit g/cm³ is often used to express density.

Front

What is the buoyant force on an object in a fluid equal to?

Back

The buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object.

Front

If a brick weighs 26N in air and 11N underwater, what is the size of the buoyant force exerted by the water on the brick?

Back

The size of the buoyant force exerted by the water on the brick is 15N.

Front

Define buoyancy.

Back

Buoyancy is the ability of an object to float in a fluid, which is determined by the weight of the fluid displaced by the object.

Front

What is the principle of Archimedes?

Back

The principle of Archimedes states that an object submerged in a fluid experiences a buoyant force equal to the weight of the fluid it displaces.

Front

How does the density of an object affect its buoyancy?

Back

If an object's density is less than the density of the fluid, it will float; if it is greater, it will sink.

Front

What happens to the buoyant force if the volume of an object submerged in a fluid increases?

Back

If the volume of an object submerged in a fluid increases, the buoyant force acting on it also increases.

Front

What is the relationship between weight and buoyant force for an object floating in a fluid?

Back

For an object floating in a fluid, the weight of the object is equal to the buoyant force acting on it.