Displacement of water: When an object is placed in water it pushes it out of the way.
The reason boats float is because they displace an amount of water equal to it's weight.
Archimedes was a Greek scientist and he discovered that objects placed in water displace as much water equal to the amount of space they take up.
Fish control their buoyancy by using a swim bladder and they do this by controlling the amount o air in the bladder to float, sink, or become neutrally buoyant.
Negatively buoyant: an object sinks.
Positively buoyant: an object floats.
Neutrally buoyant: an object becomes neither Positively or negatively buoyant.
The reason boats float is because they displace an amount of water equal to it's weight.
Archimedes was a Greek scientist and he discovered that objects placed in water displace as much water equal to the amount of space they take up.
Fish control their buoyancy by using a swim bladder and they do this by controlling the amount o air in the bladder to float, sink, or become neutrally buoyant.
Negatively buoyant: an object sinks.
Positively buoyant: an object floats.
Neutrally buoyant: an object becomes neither Positively or negatively buoyant.