What is Density?

Added: 2026-05-17

[00:00:00]Why does a tiny rock sink, but a massive ship floats? The answer is density.

[00:00:05]Density is how much matter is packed into a certain space. Something with high density has a lot of mass squeezed into a small area, while low-density objects spread their mass out more.

[00:00:16]Think about a sponge and a metal block.

[00:00:18]They might look similar in size, but the metal block feels much heavier because its particles are packed much tighter together. That means it has a higher density. This is why oil floats on water and why some objects sink instantly, while others stay on the surface.

[00:00:31]Density helps us understand how materials behave in the real world, from floating ships to hot air balloons.

[00:00:37]Learn more on Learnstock, link in bio.