AIDA 2 & 3 extra

Question 1

What are the 2 safety levels?

Answer 1

1. Yourself
   Conservative diving, correct weight, correct gear, good technique, judge conditions correct
2. Buddy system
   Budding is as serious as your own dives

Question 2

What is TV

Answer 2

Tidal volume
Amount in and exhaled on relaxed breathing

Question 3

What is IRV & ERV?

Answer 3

Inspiratory reserve volume
Expiratory reserve volume

How much can be in / exhaled after relaxed breathing

Question 4

What is IRV & ERV?

Answer 4

Inspiratory reserve volume
Expiratory reserve volume

How much can be in / ex Haledon after relaxed breathing

Question 5

VC?

Answer 5

Vital capacity
Max amount that can be inhaled

VC = ERV + TV + IRV

Question 6

VC?

Answer 6

Vital capacity
Max amount that cab be inhaled

VC = ERV + TV + IRV

Question 7

FRC?

Answer 7

Functional residual capacity

Amount of air in the lungs after relaxed exhalation
FRC = ERV + RV

Question 8

RV?

Answer 8

Residual value

Amount of air in lungs after max exhalation
25% TLC
Determines how deep you can equalize normally

Question 9

TLC?

Answer 9

Total amount of air lungs can hold

Question 10

Surface time rule of thumb?

Answer 10

Surface time = 2 x dive time

+30m dive
30-55m = depth m / 5
+55m = 1 dive / 24 hours