1 Star Diver Exam

Choose the correct option

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1. The “Octopus” It is fixed to _____________________ of the first stage through a hose than the normal one.
2. The cylinder is the container that allows the diver to carry a reserve of breathable ______________ underwater.
3. Hypoxia refers to the situation in which the amount of oxygen required by the cell is less than that available to the body
4. During a dive careful attention needs to be paid to controlling the buoyancy, which should be_______________
5. The pressure gauge must have a safety valve that will blow after the glass.
6. 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.
7.

The lead weights usually are fixed to the weight belt; the belt should also...

8. The tendency of the body to float is:
9. After the use the mask must be rinsed with fresh water and replaced with the glass downwards so that the soft part does not become deformed.
10. A divelog well kept is a document that shows the divers experience but is of much less value than a certificate.
11.

During this course all dives will be performed within the limits of non-decompression

12. Every time that our body undergoes a loss of heat it responds by trying to maintain a constant temperature in the central zone. This is:
13. 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.
14. Underwater sounds are transmitted ______________ because water has a greater density than air.
15. You plan a dive at 29 metres for 22 minutes. What is the corresponding dive letter group when you finsh the dive?
16. The BCD must be slowly deflated during ascent, because the air inside it expands and creates an ________________________and subsequent loss of control of speed. (max. 9 meter/minutes)
17. 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 ____________
18. Begin the ascent with no less than _____________ in the cylinder.
19. The pressure of the cylinder must be checked by taking 1 breaths from each regulator whilst watching the contents gauge.
20. By wearing a mask, an air space is placed between the diver’s eyes and the water so the objects can be_______________________
21. The BCD is used to_____________________
22. Depth gauge is an instrument that measures the depth before a dive.
23. Several techniques exist for entering into the water these have always been developed with the safety of the ___________ as a primary consideration.
24. At a depth of 15 metres, the pressure inside the lungs will be the equivalent of the ambient pressure:
25. In the case of loss of regulator it is necessary to ascent and continue to
26. “At a constant temperature the volume of a gas varies _____________ with absolute pressure while the density of a gas varies ________ with absolute pressure”
27. Normally, ____________ breath is preceded by an increase in the breathing rate.
28. 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).
29. You plan a dive at 23 metres for 23 minutes. What is the corresponding dive letter group when you finsh the dive?
30. While you dive, in order to evaluate the hydrostatic equilibrium, is important to consider the relation between volume and weight of:
31. Descending and ascending through the bubbles discharged by another diver below, can cause dizziness, try not to look at the bubbles.
32. On dive tables the time and depth of the dive are correlated.
33. The mask headstrap must
34. Undewater it is always necessary to ____________ the mask
35. The ascent starts finning towards the surface, in order to control the speed; the B.C.D. must be ________________.
36. 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?
37. All weight belts must have a quick release buckle, which requires a positive action to open them
38. Descending underwater the increase in pressure is constant at ______ Atmosphere every 10 metres.
39. The pressure gauge shows the level of pressure in the ____________
40. 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.
41. The BCD is also equipped with four or more valves to avoid the risks of over inflating it.
42. The air that we breathe is composed of a mixture of gases, for simplicity let’s say that is made up mainly of________________________
43. 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?
44. The regulator enables the diver to breathe underwater. This part the equipment allows _________________.
45. At a depth of 27 metres, the pressure inside the lungs will be the equivalent of the ambient pressure:
46. The speed at which sound travels through water makes it difficult for his senses to judge _______________
47. The test of cylinder consists of checking inside and outside for corrosion and pressure resistance test using pressure of ________ higher than in normal use
48. When you plan a dive the first thing is to establish the maximum depth to be reached, for examples 13 metres, naturally considering 15 metres on the tables following down the column the limit of permanence at this depth is shown at 100 minutes. Planning to dive for 35 minutes, 30 minutes must be calculated. At this point on the right the corresponding dive letter group, in this case F is found.
49. After commencing final descent check your buddies kit for any air leaks.
50. Together with the main regulator it is advisable to have an alternative source of air in order to have a safer diving.


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