Coffee, my friend
What would I do without you?

Piping hot in the morning,
Icy cold in the afternoon,
A day without you is like sleep.


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Day Eight
The 10 Objectives for today:


1. State the weight in psi that the atmosphere exerts on the earth's surface.
2. State the number of feet of salt water and the number of feet of fresh water necessary to exert 1 atmosphere.
3. Explain the difference between absolute pressure and gauge pressure.
4. State the fractional volume of a closed container filled with air when it is taken from the surface to a depth of 33 feet in salt water.
5. Explain how the phenomenon referred to in Objective 4 will affect your middle ear when you dive and what you can do while descending to prevent this from injuring you.
6. State what will happen to a container which is filled with air and sealed at a depth of 33 fsw and then brought to the surface.
7. Name two conditions that can result from the above.
8. Name one thing that you must never do while scuba diving that might cause the conditions referred to in Objective 7.
9. State the common cause of air embolism when using scuba.
10. State, from memory, the emergency phone number for the Divers Alert Network.

Today we will cap a milk jug at the suface and lower it into the water observing the volume as we descend.

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