RDP
What is the no decompression limit for a dive to 45 feet?
80 minutes
What is the absolute pressure in 129fsw?
4.9ATA
Diving with a cold or allergies may cause me to:
have significant difficulty equalizing pressure in my body spaces.
The most important feature of my weight system is:
a quick release that allows me to drop enough weight to float
Most injuries caused by aquatic animals happen because:
the animal is trying to protect itself
You are a C diver, after a 1:10 minute surface interval, what is your letter group?
A
At what depth in salt water are you at 2.3 ATA?
42.9 fsw
Oxygen is effeciently transported throughout the body because it binds with _________ which is contained in the ___________________ cells.
Hemoglobin:Red Blood
What are the two basic parts of a regulator called?
First stage and second stage
The rule of thumb is that it is best to dive at what tide?
slack high
In the advanced course, you plan to do a dive to 94 feet for 18 minutes. What will your pressure group be?
M
You plan to recover an anchor in sea water that weighs 360lbs. It displaces 3 cubic feet of water. How many cubic feet of air do you need to add to a lifting device to make the anchor neutrally buoyant?
Add 3 cu ft
The reflex respiratory center regulates breathing based primarily on the level of _______ in the blood.
CO2
Where should your alternate air source be located?
The triangle of care
What is the base of the marine food chain?
phytoplankton
You plan to do 2 dives. Your first dive is to 58 feet for 32 minutes, followed by a 1:30 minute surface interval. You then go to 42 feet for 35 minutes. What is your ending pressure group?
V
You take a gas volume of 3.5 litres in a flexible container from the surface to a depth of 125ft in salt water. What will the new volume be?
.7L
What is hypoxia?
Not enough oxygen
What is the first thing you do when you get a new dive computer?
Read the manual
A wave breaks in water that is how many times its height?
1.3
You are taking the deep diver specialty, you want to do a 110 foot dive for 15 minutes, followed by a 75 foot dive for 23 minutes what is the minimum surface interval?
2:10
If an air mixture contains 79% nitrogen and 21% oxygen at sea level, what will be partial pressure of nitrogen be if it is taken to 99 fsw?
3.16 ATA
Name the 4 lung over expansion injuries and which is the most dangerous?
Subcutaneous Emphysema/Mediastinal Emphysema/Arterial Gas Embolixm/ Pneumothorax
What is the purpose of a burst disk?
To relieve over pressurized tank without damaging the valve
What forests are important to the survival of adjacent coral reef systems?
mangrove