Submarines change their depth by use of ballast tanks. To dive, they open their tanks so that they become filled with water. They also angle their dive planes. To surface, they pump the water out of their tanks and fill them with pressurised air.
They rise to the surface when air is pumped IN. They sink when air is let out
They use ballast tanks to contain sea water or air to control their depth
Submarines are designed with enough ballast and control systems to allow them to submerge and surface as needed.Surface ships are designed only with enough ballast and control systems to keep them on the surface. While they can sink just as well as submarines can, their ability to re-surface without a salvage operation is non-existent.
it will float as long as it is not fully covered water.
does Arsenic float or sink
No.
Yes, they does.
I have a marker which float in water.
All submarines can sink. Some can return to the surface.
Float
How can you make a chocolate float or sink
scoria will sink but pumice will float.