1.
Water is denser than air.
2.
A cubic foot of salt water weighs ___ pounds
3.
A cubic foot of fresh water weighs ___ pounds
4.
One atmosphere is ___ feet.
5.
____ is the relative hotness or coldness of a body or environment as measured on a standard scale, while ____ is defined as a form of energy that can be transmitted through solid or fluid medium by donduction, through fluid medium by convection, or through a space as infrared radiation.
A. 
B. 
C. 
D. 
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. 
B. 
C. 
D. 
8.
Atmospheric pressure at One Atomsophere = _____ PSI.
9.
The sum of atmospheric pressure and hydrostatic pressure is:
A. 
B. 
C. 
D. 
E. 
10.
The pressur surrounding you, whether you are underwater or above water is:
A. 
B. 
C. 
D. 
E. 
11.
At a given pressure, the pressure of a single gas within a mixture of gases is.
A. 
B. 
C. 
D. 
E. 
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. 
B. 
C. 
D. 
E. 
13.
What is the partial pressure of nitrogen at sea level? ____ PSI
14.
For any gas at a constant temperature, the volume will vary inversely with the absolute pressure while the density will vary directly with the absolute pressure. This is:
A. 
B. 
C. 
D. 
E. 
15.
When pressure increases, volume of the gas ______. When pressure decreases, volume of a gas ______.
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. 
B. 
C. 
D. 
E. 
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. 
B. 
C. 
D. 
E. 
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. 
B. 
C. 
D. 
E. 
20.
You will be less buoyant in salt water than fresh.
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. 
B. 
C. 
D. 
25.
Sound travels ___ times faters through water than air.