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Submarine Floatation Mechanisms

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Questions and Answers

What allows a submarine to float on the surface of the water under normal conditions?

The average density of the submarine is less than that of sea water (correct)

The ballast tanks are filled with water

The weight of the submarine is equal to the weight of the water displaced

The submarine is completely submerged

What happens to a submarine's average density when it needs to dive into the water?

It remains unchanged

It becomes less than sea water's density

It becomes greater than the density of sea water (correct)

It becomes equal to the density of sea water

What is the role of compressed air in a submarine's buoyancy regulation?

It is used to equalize pressure with the surrounding water

It forces water out of the ballast tanks to help the submarine rise (correct)

It maintains the submarine's structural integrity

It fills the ballast tanks to help the submarine sink

When a submarine is submerged, what condition must be met for it to rise back to the surface?

<p>The average density must be less than that of the sea water</p> Signup and view all the answers

What occurs when the submarine opens the underbelly doors of the ballast tanks?

<p>Water enters the ballast tanks, increasing its weight</p> Signup and view all the answers

Study Notes

Submarine Floatation

Submarines are fish-shaped ships that can travel underwater
Submarines contain ballast tanks filled with compressed air
The submarine normally floats on the water surface like a ship
The submarine's average density is less than that of water
Ballast tank underbelly doors are closed while floating on the surface
To dive, the ballast tank underbelly doors open
Water rushes into the ballast tanks
The submarine's average density becomes greater than the density of water
The submarine sinks
To rise, compressed air from steel cylinders is directed into ballast tanks
Compressed air pushes water out of the ballast tanks
The submarine's average density becomes less than that of water
The submarine rises to the surface

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Description

Explore the fascinating principles of how submarines operate underwater. This quiz covers the mechanisms of buoyancy involving ballast tanks, density changes, and the processes of diving and rising. Test your knowledge on the science behind submarine floatation!