Test - how good is your knowledge really?

Below you will find 20 questions, selected randomly from our database. Choose the best answer to each of the questions. Once you answered all questions, enter your first name and your email address. You receive the score for all questions, and – if you should have mistakes – the correct answers by email.

Question	Options	Answer
The sign and symptoms of Nitrogen narcosis could include _____and would normally subside when the diver______:	A: Euphoria / ascents to a shallower depth B: Euphoria / descents deeper C: Anxiety / is placed in a recompression chamber D: Anxiety / descents deeper	?ABCD
A diver arriving at a dive site with unfamiliar conditions, should participate in _________, regardless the certification level of the diver:	A: Scuba Review B: Scuba Tune-up Program C: Discover Local Diving D: Discover Scuba Diving	?ABCD
Until which altitude can you use the RDP without having to recalculate the depths and PG?	A: Not at all B: 300 Meters C: 600 Meters D: 900 Meters	?ABCD
Convulsions under water indicate:	A: decompression illness B: CNS oxygen poisoning C: decompression sickness D: oxygen poisoning to the lungs	?ABCD
Why should you have your cylinder visually inspected? To look for:	A: Corrosion on the inner side of the cylinder B: Corrosion on the bottom of the cylinder C: Corrosion between the cylinder and valve D: All of the above answers are correct	?ABCD
If you can breath for 120 minutes from a 10 liter scuba-cylinder at 200 bar at the surface, how long could you breath from the same air supply at 20 meters depth?	A: 30 Minutes B: 40 Minutes C: 60 Minutes D: 120 Minutes	?ABCD
The best time to do an dive is _____ because you have most____.	A: in the morning / dawn active animals B: during a storm / water movement C: at midday / light u/w D: when the ocean is calm / animals	?ABCD
A diver uses 2 bar per minute from a 10 liter cylinder at the surface. If all other factors remain the same, what would the consumption of the diver be at a depth of 20 meters.	A: 2 bar B: 4 bar C: 12 bar D: 6 bar	?ABCD
What should you do, if you have a person who have had a near drowning accident but says that he feels all right:	A: Send the person to a medical clinic for further observations B: Give the patient something to drink C: Bring the person with on the next dive D: Transport the person to the nearest recompression chamber	?ABCD
A 5 minute compartment has reached (approached) the equilibrium with the surrounding pressure, in ______ minutes after arriving in an environment with a different pressure.	A: 5 minutes (because it is the 5 minute compartment) B: 30 minutes (because there are 6 periods) C: 70 minutes (because the RDP has 14 compartments) D: 10 minutes (because that completes 2 halftimes ½ + ½ = 1 complete)	?ABCD
Which barotrauma is most dangerous?	A: Air accumulating at the neck B: Air accumulating in the area around the heart C: Air in the pleural cavity D: Air bubbles in the Arteries	?ABCD
Which problem is normally not a concern for the ear while diving?	A: A rupture of the eardrum B: A rupture of the round window C: A rupture of the oval window D: Fluid filling up the middle ear	?ABCD
What are the consequence of an elevated nitrogen partial pressure?	A: Red colored lip’s B: Carotis sinus reflex C: Hypercapnia D: Nitrogen narcosis	?ABCD
A flexible container is filled with 2.4 liter of air at a depth of 7 meters. What will the volume be when the container is taken to a depth of 24 meters?	A: 4.8 liter B: 1.2 liter C: 1.4 liter D: 0.5 liter	?ABCD
A completely equipped diver has a weight of 110 kg and is neutrally buoyant in fresh water. How much additional weight does he need to be neutrally buoyant in salt water?	A: 3.3 kg B: 2.75 kg C: 5.5 kg D: The diver needs less weights	?ABCD
If blood soaks trough a bandage when you take care of a bleeding patient, you should:	A: apply a pressure point. B: apply a tourniquet. C: remove the bandage and place a new one and continue to apply direct pressure D: place a new bandage on top of the first and continue to apply direct pressure.	?ABCD
The person who is credited for creating the first dive tables and developed the mathematical model, which is still used today for tables and divecomputers (with modifications) is called:	A: Haldane B: Boyle C: Henry D: Bühlmann	?ABCD
For calculating the RDP, 14 theoretical compartments were used, which is ___ more than the US Navy used to create their tables	A: 6 B: 8 C: 9 D: It was the US Navy that used more compartments.	?ABCD
Sound under water travels approx. ____ faster than in air	A: 800 B: 20 C: 5 D: 4	?ABCD
What is a mammalian dive reflex (bradycardia)?	A: the friendly reaction of whales to divers. B: an urge to go back to the surface. C: stress caused by a head first dive at the surface. D: a reaction to cold water and pressure which reduces the pulse.	?ABCD
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