Give examples where you have encountered buoyancy.

Firstly, this is swimming in the sea, river or pool, even in a bath (Archimedes himself learned about this from his own experience). This is a rubber ball from a nursery rhyme, which, as befits air-filled light bodies, does not sink in water, these are corks and sealed bottles that are thrown into the sea by the victims of a shipwreck. Thanks to the action of the buoyancy force, balloons, airships and balloons familiar to all of us fly. It is thanks to its action that ships and barges go on the sea and do not sink in the water, while the steel plate instantly sinks to the bottom.