Physics II Lesson 26: Density Classwork

Front

What is density?

Back

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

Front

How do you calculate density?

Back

Density (ρ) = Mass (m) / Volume (V).

Front

What is the unit of density in the SI system?

Back

The unit of density in the SI system is kilograms per cubic meter (kg/m³).

Front

What is the density of water?

Back

The density of water is approximately 1000 kg/m³.

Front

If an object has a mass of 5 kg and a volume of 2 L, what is its density?

Back

Density = 5 kg / 2 L = 2.5 kg/L.

Front

What happens to the density of an object if its mass increases while its volume remains constant?

Back

The density of the object increases.

Front

What happens to the density of an object if its volume increases while its mass remains constant?

Back

The density of the object decreases.

Front

How can density be used to identify materials?

Back

Different materials have unique densities; by measuring an object's mass and volume, its density can be compared to known values to identify the material.

Front

What is the relationship between density and buoyancy?

Back

An object will float in a fluid if its density is less than the density of the fluid.

Front

What is the formula for calculating the volume of an object given its mass and density?

Back

Volume (V) = Mass (m) / Density (ρ).