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Submarines have variable density.
When a submarine is in port, its overall density is less than that of water so some of it is above the surface of the water. They're made out of steel, which is more dense than water, but they're hollow; most of the volume of a submarine is air.
To make a submarine able to dive, they pump water into tanks. By adjusting the amount of water, they can make the density equal to water's density, which allows the boat to stay at a certain depth without expending energy to hold it up.
What else can I help you with?
When water fills a submarines flotation tanks the overall density of the submarine does what?
the overall density goes up.
When water fills a submarines flotations tanks the overall density of the submarine?
The density will rise and submerge the submarine.
How would water density compare to ocean water?
The water would have the same density anywhere it is.
Why do submarines work?
Submarines have ballast tanks in them.........when it has to go deep down, the ballast tanks are filled with water, which increases its average density in regard to water(Relative Density).....and when it has to come up to the surface it empties the ballast tanks...and it rises. That's it.
How does the density of ice compare to the density of water?
Ice is less dense than liquid water.
How does the density of water (ice) compare with the density of water (liquid)?
Ice is less dense than liquid water.
How does the density of magnesium compare with that of water?
It is greater than water. It sinks.
What is the minimal information you need to decide will float in the water?
Average density of the object compare to density of water. If denser than water, it will sink.
Compare submarines and ships?
Ships try to avoid sinking, submarines sink on purpose...
How do submarines control their density?
By their pumps and ballast-tanks: allowing water into the tanks to raise the vessel's density so can submerge, or pumping air into the tanks to displace the water and allow the submarine to surface.
How does oils density compare to waters density?
Oil is heavier than water so it sinks to the bottom.
How can one determine the relative density of a substance?
To determine the relative density of a substance, you can divide the density of the substance by the density of water. The relative density is also known as specific gravity and helps compare the density of a substance to that of water.
