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Scuba Physics: Dalton's and Henry's Laws and Diving Physiology Flashcards | StudBud
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Scuba Physics: Dalton's and Henry's Laws and Diving Physiology
Scuba Physics: Dalton's and Henry's Laws and Diving Physiology
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1
An intoxicating effect by breathing air under pressure caused by nitrogen is
the bends.
nitrogen narcosis.
oxygen toxicity.
contaminated air.
2
After a dive you are in PG N. What will be your new PG after a 32 minute surface interval?
N
H
G
O
3
A common example of Henry's Law is
a bottle of pop.
tomato juice.
a meter stick.
a towel dispenser.
4
Which of the following can you use to estimate dissolved nitrogen in your body after a dive?
a dive planning app on your phone
a dive computer
US Navy dive tables
Recreational Dive Planner (RDP)
5
What is your final PG after a dive to 50 feet for 50 minutes, a 1:30 SI and another dive to 50 feet for 50 minutes?
W
U
You should not do this as it exceeds the NDL on the second dive.
P
6
Enriched air is any gas mixture with less than 21% oxygen in it.
False
True
7
After a SI, you are in PG C. What is your RNT for a dive to 50 feet?
19 minutes
17 minutes
61 minutes
63 minutes
8
The total pressure of a mixture of gases is the sum of the partial pressure of each gas in the mixture.
Pascal's Law
Henry's Law
Archimedes' Law
Dalton's Law
9
Air around the heart or the organs of the neck is
subcutaneous emphasema.
arterial gas embolism.
mediastinal emphasema.
pneumothorax.
10
Air underneath the skin is
mediastinal emphasema.
subcutaneous emphasema.
pneumothorax.
arterial gas embolism.
11
What is the partial pressure of oxygen (21%) in air at 3 atm?
63 atm
21 atm
0.21 atm
0.63 atm
12
An effect by breathing impure air under pressure is
contaminated air.
the bends.
nitrogen narcosis.
oxygen toxicity.
13
What is the NDL for a single dive to 96 feet?
140 minutes
20 minutes
55 minutes
205 minutes
14
What is your final PG after a dive to 60 feet for 50 minutes, a 1:00 SI and another dive to 60 feet for 50 minutes?
You should not do this as it exceeds the NDL on the second dive.
Z
G
X
15
The number one rule of scuba diving is to
not run out of air.
avoid sharks.
have fun.
breathe continuously and never hold your breath.
16
What is the NDL for a single dive to 40 feet?
20 minutes
140 minutes
205 minutes
55 minutes
17
Never hold your breath while scuba diving to prevent lung overexpansion.
True
False
18
Click True when you have your copy of the RDP out for the next set of questions.
True
False
19
Air in the bloodstream that may travel to the brain is
mediastinal emphasema.
subcutaneous emphasema.
arterial gas embolism.
pneumothorax.
20
What is your PG after a dive to 60 feet for 44 minutes?
T
Q
R
V
21
What is the partial pressure of nitrogen (78%) in air at 2 atm?
0.78 atm
1.56 atm
0.21 atm
78 atm
22
What is your PG after a dive to 26 feet for 113 minutes?
L
Q
T
U
23
After a dive you are in PG T. What will be your new PG after a 0:30 minute surface interval?
D
Q
T
M
24
Lung overexpansion injuries
are extremely rare.
only happen if you dive deeper than 100 feet.
occur on most scuba dives.
occasionally occur to most divers.
25
After a SI, you are in PG Q. What is your adjusted NDL for a dive to 55 feet?
42 minutes
61 minutes
13 minutes
17 minutes
26
What is your PG after a dive to 96 feet for 13 minutes?
I
H
L
U
27
The gas that dissolves into a liquid at a given temperature is directly proportional to the partial pressure of that gas
Archimedes' Law
Henry's Law
Dalton's Law
Pascal's Law
28
Air in the chest cavity is
arterial gas embolism.
mediastinal emphasema.
pneumothorax.
subcutaneous emphasema.
29
According to Henry's Law, as you dive deeper breathing compressed air
excess gases in your body will be removed by the pressure.
the excess gas will be dissolved into your body more slowly.
the excess pressure has no effect on gases.
the excess gas will be dissolved into your body faster.
30
After a dive you are in PG Q. What will be your new PG after a 1:30 minute surface interval?
D
Q
O
C
31
What is the partial pressure of oxygen (21%) in air at 1 atm?
78 atm
21 atm
0.21 atm
0.78 atm
32
What is the NDL for a single dive to 60 feet?
55 minutes
140 minutes
205 minutes
20 minutes
33
What is the partial pressure of nitrogen (78%) in air at 1 atm?
0.21 atm
0.78 atm
21 atm
78 atm
34
An effect by breathing in too much oxygen under pressure is
oxygen toxicity.
contaminated air.
nitrogen narcosis.
the bends.
