Explore Density and Buoyancy Concepts

Front

What is density?

Back

Density is the mass of an object divided by its volume, typically expressed in grams per milliliter (g/mL) or kilograms per cubic meter (kg/m³).

Front

How does density affect whether an object sinks or floats?

Back

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

Front

What is buoyancy?

Back

Buoyancy is the upward force exerted by a fluid that opposes the weight of an object immersed in it.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.

Front

If an object has a density of 2.5 g/mL, will it float in water (density = 1.0 g/mL)?

Back

No, it will sink because its density is greater than that of water.

Front

What happens to the buoyant force when the volume of water displaced increases?

Back

The buoyant force increases as the volume of water displaced increases.

Front

What is Archimedes' principle?

Back

Archimedes' principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object.

Front

If an object weighs 100 gf in air and 80 gf in water, what is the buoyant force acting on it?

Back

The buoyant force is 20 gf.

Front

What is the relationship between buoyancy and the density of the fluid?

Back

The greater the density of the fluid, the greater the buoyant force acting on an object.

Front

What happens to an object that is neutrally buoyant?

Back

An object that is neutrally buoyant neither sinks nor floats; it remains suspended in the fluid.