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1.  Who is credited with discovering the law of buoyant force?

2.  State the principles of Archimedes' law.

3.  What is the apparent weight of an object in water, and how is it computed?

4.  How can a boat constructed from a material more dense than water float?

5.  What is density, and how is it computed?

6.  Why does a hot-air balloon tend to rise in the air, while one filled with cold air does not?

7.  With what equipment is a submarine fitted to allow it to submerge?

8.  Upon what factors is a ship's stability dependent?

9.  What might happen if excessive weight is added high in a ship?

10.  What will a ship sometimes do to lower its center of gravity in stormy seas?