Skip to content
Apnea & Spearfishing
PTRD Diving Centers
1 Star Diver Exam
1 Star Diver Exam
June 24, 2017
September 8, 2020
Choose the correct option
The Instructor Name
The Instructor Email
Several techniques exist for entering into the water these have always been developed with the safety of the ___________ as a primary consideration.
Descending and ascending through the bubbles discharged by another diver below, can cause dizziness, try not to look at the bubbles.
Before a dive it is good to carry out a thorough check with your buddy, helping him/her to prepare and put on the equipment before entering the water.
A floating buoy marks the presence of divers underwater. In some countries dive law requires ______________ flag known as an “A FLAG”
a blue and white
a blue and yellow
a red and yellow
a red and whithe
If you ascend too quickly the nitrogen is cannot be released quickly enough thus contributing to the formation of bubbles in the divers __________
The air that we breathe is composed of a mixture of gases, for simplicity let’s say that is made up mainly of________________________
of 80% of oxygen and 20% of nitrogen
of 80% of oxygen and 20% of carbon dioxide
of 100% of oxygen
of 20% of oxygen and 80% of nitrogen
underwater the objects appear _____________by about 1/3, water also absorbs light, an effect that increases with wather depth.
farther and bigger
farther and smaller
closer and bigger
closer and smaller
The function of the respiratory organs is to supply the body with the gasses surrounding it; this is done by its absorption into the blood through the ____________
The pressure of the cylinder must be checked by taking 1 breaths from each regulator whilst watching the contents gauge.
During a dive careful attention needs to be paid to controlling the buoyancy, which should be_______________
The only effective treatment for air embolism syndrome is immediate recompression in a hyperbaric chamber and the administration of large quantity of __________ to make the blood more fluid and so reduce the risks of obstruction by the bubbles.
You plan a dive at 23 metres for 23 minutes. What is the corresponding dive letter group when you finsh the dive?
At a depth of 27 metres, the pressure inside the lungs will be the equivalent of the ambient pressure:
Underwater sounds are transmitted ______________ because water has a greater density than air.
much more slowly
much more quickly
You plan a dive at 29 metres for 22 minutes. What is the corresponding dive letter group when you finsh the dive?
The test of cylinder consists of checking inside and outside for corrosion and pressure resistance test using pressure of ________ higher than in normal use
The most serious consequence of pulmonary overdistension is the passing of ________ bubbles from the alveoli into the blood stream and is commonly known as air embolism syndrome.
For the assembly of regulator there are two types of fitting: INT with five or seven thread female and DIN with a yoke (A clamp).
Wet suits are generally made of silicone, of different thickness (from 1.5 to 8 mm), lined on the inside and outside with special cloth that make them more comfortable.
Together with the main regulator it is advisable to have an alternative source of air in order to have a safer diving.
At the end of the a first dive the letter group is E. Now, wanting to plan a second dive, after a break on the surface of 3 hours and 29 minutes. What is the new dive letter group after the time on the surface?
A personal dive computer can calculate the exact saturation state of our tissue
Depth gauge is an instrument that measures the depth before a dive.
After commencing final descent check your buddies kit for any air leaks.
At the end of the a first dive the letter group is F. Now, wanting to plan a second dive, after a break on the surface of 3 hours and 29 minutes. What is the new dive letter group after the time on the surface?
It is advisable to ________________ before entering the water.
slightly inflate the jacket
drink a Coca cola or similar sparkling drink
deflate the jacket
The speed at which sound travels through water makes it difficult for his senses to judge _______________
At the end of the a first dive the letter group is H. Now, wanting to plan a second dive, after a break on the surface of 3 hours and 29 minutes. What is the new dive letter group after the time on the surface?
When diving without reference points and in reduced visibility, the _______________ supplies the diver with information of the route and helps with the return to the starting point.
The BCD is used to_____________________
keep the buoyancy constant
After a time on the surface the new dive letter group is B. Now wanting to plan a second dive in this case 14 metres for 25 minutes. What is the new dive letter group at the end of the dive?
On dive tables the time and depth of the dive are correlated.
The function of the cardio-circolatory system is to transport and distribute oxygen and to remove residues and _____________
If we want to dive, ________________________, the B.C.D. must be deflated by using the exhaust valve.
keeping a vertical position
keeping a horizontal position
keeping your arms under water
keeping your head under water
Normally, ____________ breath is preceded by an increase in the breathing rate.
A divelog well kept is a document that shows the divers experience but is of much less value than a certificate.
In the case of loss of regulator it is necessary to ascent and continue to
Hypoxia refers to the situation in which the amount of oxygen required by the cell is less than that available to the body
The regulator enables the diver to breathe underwater. This part the equipment allows _________________.
air supply at ambient pressure.
air supply at atmospheric pressure.
air supply at hidrostatic pressure.
our body contains cavities filled with gas that subjected with pressure are compensated for in two ways:
reduction of pressure - increase volume
reduction of pressure - balance of volume
increase pressure - reduction of volume
balance of pressure - increase volume
The pressure gauge must have a safety valve that will blow after the glass.
While you dive, in order to evaluate the hydrostatic equilibrium, is important to consider the relation between volume and weight of:
the human body, the density of the liquid and the neoprene suit
the BCD, the density of the liquid and the neoprene suit
the human body, the density of the liquid and the BCD
the human body, the BCD and the neoprene suit
Nitrogen narcosis effects different divers differently depending on the ___________________
physical conditions and the ambient
only physical conditions
only psychic conditions
All the divers should have at least a basic understanding of first aid and O2 administration.
Every time we make a movement we use energy which asks more of our body, requiring a change in the ___________ in order to satisfy this new demand.
The BCD is also equipped with four or more valves to avoid the risks of over inflating it.
The cylinder is the container that allows the diver to carry a reserve of breathable ______________ underwater.
Always have a keeper on _________________ side of the weightbelt from the buckle.
By wearing a mask, an air space is placed between the diver’s eyes and the water so the objects can be_______________________
The “Octopus” It is fixed to _____________________ of the first stage through a hose than the normal one.
a high-pressure port - longer
a high-pressure port - shorter
a low-pressure port - longer
a low-pressure port - shorter
Enter your comments here
Time is Up!
Comments are closed.
PTRD in the world
PTRD is ISO Certified
PTRD INTERNATIONAL registered
PTRD Official Spanish Certifier
PTRD is CDWS recognised
PTRD is EDA recognised
PTRD is Poseidon recognised
PTRD is WSDS member
PTRD is ITA06 CMAS member
PTRD is ITAF07 CMAS Member
PTRD is DAN Member