Podcast
Questions and Answers
What allows a submarine to float on the surface of the water under normal conditions?
What happens to a submarine's average density when it needs to dive into the water?
What is the role of compressed air in a submarine's buoyancy regulation?
When a submarine is submerged, what condition must be met for it to rise back to the surface?
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What occurs when the submarine opens the underbelly doors of the ballast tanks?
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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!
