What Is Matter?: Density

The video tutorial explores the concept of density by comparing the weights of rock and foam. Although both have the same mass, their densities differ significantly. The tutorial explains that density is mass per unit volume and demonstrates calculations for foam and rock. Foam has a lower density than rock, making it less harmful if dropped. The video also discusses how density affects buoyancy, with objects denser than water sinking and those less dense floating.

Why would you prefer foam over rock if both weigh the same?

What is the definition of density?

How do you calculate density?

What are the masses and volumes of the foam and rock in the example?

What happens to objects with a density greater than 1?