Chapter 5: Diving Physics
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- 1.Water is denser than air.
- A.
True
- B.
False
- 2.A cubic foot of salt water weighs ___ pounds
- 3.A cubic foot of fresh water weighs ___ pounds
- 4.One atmosphere is ___ feet.
- 5.
- A.
Heat / temperature
- B.
Cold / sound
- C.
Temperature / heat
- D.
Energy / light
- 6.Water absorbs heat ____ times faster than air.
- 7.The "pulling away" of heat in cold water is a property of heat energy transmission known as:
- A.
Conduction
- B.
Convection
- C.
Radiation
- D.
Microwave
- 8.Atmospheric pressure at One Atomsophere = _____ PSI.
- 9.The sum of atmospheric pressure and hydrostatic pressure is:
- A.
Gauge pressure
- B.
Absolute pressure
- C.
Sum pressure
- D.
Under pressure
- E.
Ambient pressure
- 10.The pressur surrounding you, whether you are underwater or above water is:
- A.
Absolute pressure
- B.
Gauge pressure
- C.
Under pressure
- D.
Partial pressure
- E.
Ambient pressure
- 11.At a given pressure, the pressure of a single gas within a mixture of gases is.
- A.
Ambient pressure
- B.
Atmospheric pressure
- C.
Partial pressure
- D.
Absolute pressure
- E.
Gauge pressure
- 12.The total pressure exerted by a mixture of gases is the sum of the pressures that would be exerted by each of the gases if it alone were present and occupied the total volume.
- A.
Archimedes' Principle
- B.
Dalton's Law
- C.
Boyle's Law
- D.
Henry's Law
- E.
Charles' Law
- 13.What is the partial pressure of nitrogen at sea level? ____ PSI
- 14.
- A.
Dalton's Law
- B.
Boyle's Law
- C.
Archimedes' Principle
- D.
Charles' Law
- E.
Henry's Law
- 15.When pressure increases, volume of the gas ______. When pressure decreases, volume of a gas ______.
- A.
Decreases / increases
- B.
Increases / decreases
- 16.A gas is using 120 cubic feet at the surface. What volume will it be at 66 feet? ____ cubic feet
- 17.For any gas at a constant pressure, the volume of the gas will vary directly with the absolute temperature. For any gas at a constant volume, the presure of the gas will vary directly with the absolute temperature. This is:
- A.
Henry's Law
- B.
Archimedes' Principle
- C.
Boyle's Law
- D.
Charles' Law
- E.
Dalton's Law
- 18.The amount of any given gas that will dissolve in a liquid at a given temperature is a function of the partial pressure of that gas in contact with the liquid and the solubility coefficient of the gas in the particular liquid. This is:
- A.
Charles' Law
- B.
Boyle's Law
- C.
Dalton's Law
- D.
Henry's Law
- E.
Archimede's Principle
- 19.A body immersed in liquid, either wholly or partially, is buoyed up by a force equal to the weight of the liquid displaced by the body. This is:
- A.
Archimede's Principle
- B.
Boyle's Law
- C.
Charles' Law
- D.
Dalton's Law
- E.
Henry's Law
- 20.You will be less buoyant in salt water than fresh.
- A.
True
- B.
False
- 21._____, which is the bending of light waves, results when light waves pass through mediums of different densities, and changing speed.
- 22.Objects appear ___% closer underwater.
- 23.Objects appear ___% larger underwater.
- 24.What color disappears first underater?
- A.
Yellow
- B.
Green
- C.
Red
- D.
Orange
- 25.Sound travels ___ times faters through water than air.
- 26.Changes in pressure will alter the volume of a gas.
- A.
True
- B.
False
- 27.Pressure will force a gas into solution.
- A.
True
- B.
False
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