PADI Open Water Diver Certification exam 2023 with 100% correct answers
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Course
NU1426
Institution
NU1426
PADI Open Water Diver Certification exam 2023 with 100% correct answers
SCUBA
What is the pressure change for each 10m/33ft of depth change?
What is the relationship between my depth in water and the pressure?
What is the relationship between pressure, and the volume and the density of air?
If...
2). What is the pressure change for each 10m/33ft of depth change?
Ans: 1 bar/1 ata/1 atmosphere
3). What is the relationship between my depth in water and the pressure?
Ans: The deeper you go in water, the more the pressure increases
Pressure is expressed as the weight of air
4). What is the relationship between pressure, and the volume and the density of air?
Ans: As pressure increases, the gas volume decreases and the gas density increases
5). If i take a volume of air from one depth to another depth, how much will the volume and
density change?
Ans: Volume will be 1/ata#
Density will be ata#
6). What 3 major body air spaces does increasing pressure affect as i descend?
Ans: Ears, sinuses, mask
7). What is a "squeeze"?
Ans: The discomfort caused by pressure imbalance pulling tissue into the air space
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, 8). What is "equalization"?
Ans: The addition of air to your air spaces as you descend
9). How do i equalize as i descend?
Ans: For ears and sinuses, pinch your nose and blow gently, or wiggle your jaw and
swallow
For mask, blow into it with nose
10). How often should i equalize?
Ans: Every meter/few feet, BEFORE you feel discomfort
11). What should i do if i can't equalize?
Ans: Stop your descent, signal problem and point to your ear, ascend a bit, and try
again
12). What can happen if i don't or can't equalize gently and keep descending?
Ans: Fluid can rupture the eardrum
Bruising around the face can occur
13). Why does a congestion from a cold or allergy temporarily keep me from diving?
Ans: Congestion might block normal air flow, making equalization difficult or
impossible
14). Why should i never dive with earplugs?
Ans: They create air spaces that you can't equalize
15). What other body air spaces are affected by increasing pressure? how do i equalize them?
Ans: In filled teeth - go to a dentist
In a dry suit - learn from an instructor
Lungs - breathe normally and continuously
16). What is the most important rule in scuba diving?
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, Ans: Breathe continuously and never hold your breath
17). What can happen if i don't follow the most important rule in scuba diving?
Ans: Your lungs will over expand and rupture
18). What is a "reverse block"?
Ans: When expanding air becomes trapped in your body air spaces as you ascend
19). What should i do if i feel discomfort in my ears, sinuses, stomach, intestines, or teeth while
ascending?
Ans: Stop your ascent and descend a meter/few feet to reduce discomfort and give
trapped air time to work its way out
20). How does depth affect how long my air supply lasts?
Ans: The deeper you are, the more dense air you breathe, and the faster you use the
air in your cylinder. Compared to the surface, air supply lasts 1/#ata as long along with
other factors
21). What's the most efficient way to breathe dense air underwater?
Ans: Take slow, deep breaths
22). How do i breathe to reduce anxiety when under stress?
Ans: Do NOT breathe faster - keep breathing slowly
23). What are my 4 breathing rules as a scuba diver?
Ans: 1. Breathe continuously and never hold your breath
2. Breathe slowly and deeply
3. Don't allow yourself to get winded or out of breath
4. If faced with a problem, stop, and reduce anxiety by breathing slowly and deeply
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