Nautical Sciences, Unit Five, Chapter Two: Buoyancy
This is an Closed Book, Multiple-choice exercise.
Use your mouse to click the box next to the most correct answer. If you fail to select the correct answer you must try again until you select the correct answer.
What is the name of the Law that describes buoyant force?
Archimedes' Law
Boyle's Law
Newton's Law
Bernoulli's Law
Kepler's Law
The upward force exerted on objects submerged in or floating on a fluid is known as what?
Buoyant force
Resultant force
Center of buoyancy
Apparent weight
Center of gravity
Archimedes' Law applies to what substances?
Liquids or gases
Solids and liquids
Solids and gases
Liquids only
Solids, liquids and gases
The weight of an object in the air, minus the buoyant force acting upon it when it is placed in the water, is known as what?
Its apparent weight
Its density
Its absolute weight
Its center of gravity
Its center of buoyancy
What is the scientific term used to describe how much of a material is present per unit of its volume?
Density
Apparent weight
Absolute weight
Newton value
Buoyancy force
Water tanks within submarines that can be filled with water to allow the submarine to sink are known as what?
Ballast tanks
Freeboard tanks
Waterline tanks
Displacement tanks
Buoyancy compensators
The center mass of a ship, around which the ship seems to move, is known as what?
Its center of gravity
Its center of buoyancy
Its apparent weight
Its absolute weight
Its relative density
The geometric center of the portion of the ship's hull that is underwater is known as what?
The center of buoyancy
The center of gravity
The ship's freeboard
The keel
The ballast tank
Which of the conditions below would be best for the stability of a ship?
A low center of gravity and a low center of buoyancy.
A low center of gravity and a high center of buoyancy.
A high center of gravity and a low center of buoyancy.
A high center of gravity and a high center of buoyancy.
The ship's center of gravity and its center of buoyancy do not have an effect on the ship's stability.
What could a light-loaded ship do when it encounters heavy seas to increase it's safety?
Fill empty fuel tanks with water.
Move cargo from below decks to the upper decks to add weight.
Pump out any ballast it has taken on.
There is little or nothing that can be done at this point.
Offload as much of its cargo as possible before going into the heavy seas.