Buoyancy Basics

There are two physical laws you need to understand for Perfect Buoyancy. What are they?

• Henry's Principle and Guy Lussac's Law

• Boyle's Law and Archimedes' Principle

• Archimedes' Law and Charles' Principle

• Charles' Law and Dalton's Law

Boyle's Law says that

• as temperature decreases, pressure and volume decrease; as temperature increases, pressure and volume increase

• as pressure increases, volume increases; as pressure decreases, volume increases

• as pressure increases, volume decreases; as pressure decreases, volume increases

• Pressure and volume and proportionally related

The greatest relative volume change takes place between

• 99 to 132 feet

• 66 to 99 feet

• 33 and 66 feet

• the surface and 33 feet

Buoyancy characteristics depend on an object's

• density

• volume only

• mass only

• all of the above are correct

Sea water is ________________ dense than fresh water.

• more

• less

Because sea water is more dense than fresh water it will provide

• less buoyant force

• more buoyant force

• equal buoyant force

An object less dense than the liquid it is in will

• sink

• hover

• float

• be neutral

The three states of buoyancy are

• positive, neutral, negative

• negative, normal, positive

• positive, normal, neutral

Your weight requirements will change due to

• salt water vs. fresh water

• different cylinder types and materials

• your BC

• your exposure suit

• All answers are correct

What should you do to make diving more fun?

• Buy your own gear!

• Take more specialty courses

• Travel to exotic locales

• All of the above