Science Common Sense

1257 - What is the principle of buoyancy in a static liquid?

The principle of buoyancy is that when you put an object in a liquid (like water), it rises or floats if it weighs less than the liquid it pushes out of the way. And it sinks if it weighs more.

Imagine you're in a pool, and you put a rubber duck in the water. The rubber duck floats because it's lighter than the water it pushes out of the way.

But if you put a heavy rock in the pool, it sinks because it's heavier than the water it pushes out of the way.