Open Water Diver Section 2 Exam Questions with Complete Solutions

Open Water Diver Section 2 Exam Questions with Complete Solutions Underwater objects appear___ - Answer: larger and/or closer My buddy has a bright red shoulder patch on his wet suit. If we're diving together in very clear water on a sunny day, at 12 metres/40 feet I would expect the patch to appear___ - Answer: less red than at the surface While my buddy and I are diving, a motorboat passes by about 300 metres/yards away. What will the sound from the motorboat be like? - Answer: I may have difficulty determining where the boat is based on the sound True or False: Because water is denser than air, it takes more effort to move through water - Answer: True To move efficiently as a diver, I should move___ - Answer: slowly and steadily True or False: Streamlining benefits me as a diver because it reduces drag, which helps me save energy - Answer: True Trim is important for streamlining because___ - Answer: poor trim raises or lowers my feet, causing drag Water's density works best for me when I use the skill of___ - Answer: controlling my buoyancy True or False: I chill faster in water than in air of the same temperature because water absorbs more heat than air does - Answer: True To stay comfortably warm during a dive, I___ - Answer: wear an appropriate exposure suit After 30 minutes underwater, I start to feel a bit cool and uncomfortable. I should___ - Answer: end the dive While diving, I start to feel cool and shortly begin to shiver uncontrollably. I should___ - Answer: end the dive immediately, dry off and seek warmth While scuba diving, I should breathe___ - Answer: slowly and deeply One method of airway control is to inhale slowly. I can also ___ to help breathe past small amounts of water in my regulator - Answer: raise my tongue True or False: If I'm tired, have labored breathing and feel air-starved and anxious during a dive, it is likely I am experiencing overexertion - Answer: True Overexertion results from___ - Answer: a prolonged increased effort If I think I'm overexerting while underwater, I should stop, signal my buddy, and___ - Answer: rest True or False: My buddies and I are planning a dive. Among other things, we should address how to enter and exit the water, the maximum depth and time, when to turn the dive and what to do if we get separated - Answer: True True or False: As my buddy and I kit up, the normal practice is to be entirely independent. Helping each other is discouraged. - Answer: False buddies normally help each other how much you help each other depends on the situation When I conduct a predive safety check, the "A" in the recall includes___ - Answer: confirming adequate air pressure for the dive If my buddy and I get separated , the general procedure is to___ - Answer: look for each other no more than a minute, then reunite on the surface The buddy system is who's responsibility? - Answer: my My buddy and I are planning a boat dive with the same type of cylinders filled to 200 bar/3000 psi. Due to conditions, we are planning very conservatively. We agree on 60 bar/800 psi for our reserve. We agree that we also want an additional 30 bar/500 psi for our ascent and safety stop. This means we should begin our ascent when either of our SPG reads___ - Answer: 90 bar/1300 psi True or False: At the surface, it's a good habit to keep my mask on and. My snorkel or regulator in my mouth because it helps me deal with difficulties more effectively - Answer: True My buddies and I plan to enter the water, but swim on the surface to a descent point about 50 metres/yards away. A primary reason we will do this is because___ - Answer: it saves our cylinder air for the dive For the 50 metre/yard swim, my buddies and I will swim ___ because it is less tiring - Answer: on our backs To stay with my buddy while surface swimming, generally it works well to swim___ - Answer: side by side True or False: I'm descending on open water with my buddies. After confirming they are ready, the next step is to signal "descend" and slowly deflate my BCD - Answer: False you orient yourself, switch to your regulator and check your dive computer or timing device before deflating your BCD When descending with a reference, I would normally___ - Answer: use it as a visual reference only My buddy and I have just started our descent. I begin equalizing___ - Answer: immediately, as soon as my head goes underwater As I descend while wearing a wet suit, my buoyancy will tend to___ - Answer: decrease During my descent, to control my buoyancy I add air to my BCD___ - Answer: in small amounts, frequently True or False: Before starting my ascent, I should check my dive computer to be sure I'm within its limits - Answer: True To start my ascent, I should___ - Answer: swim up gently When I'm ascending, I should ascend___ - Answer: slowly- at my computer's required rate I'm ascending from a dive during which I'm wearing a wet suit. My buoyancy will ___ as I ascend, unless I adjust with my BCD - Answer: increase To control my buoyancy while ascending, I should___ - Answer: vent my BCD in small amounts frequently True or False: I would never find it necessary to ascend without a reference - Answer: False you may have to ascend away from a planned reference due to losing direction or to handle an emergency or problem A safety stop is a stop between ___ and ___ for three to five minutes - Answer: 6 m/20 ft, 3 m/10 ft When I reach the surface, the first thing I do is___ - Answer: inflate my BCD True or False: The primary reason I carry a cutting tool is to defend myself against sharks and other aquatic animals - Answer: False you carry a cutting tool for safety and convenience Which cutting tool is a bladed hook for cutting fishing line or net? - Answer: z-knife I should wear at least my cutting tool___ - Answer: where either hand can reach it I wear an exposure suit while diving for ___ and ___ - Answer: protection and warmth Which type of exposure suit requires a snug fit, without which water would carry away heat or it would be uncomfortable? - Answer: wet suit Which type of exposure suit requires special training? - Answer: dry suit True or False: A hood is important when diving in water cooler than approximately 21°C/70°F - Answer: True It's a hot, sunny day but my buddy and I are diving in water that is 21°C/70°F. I'm diving in a dry suit and my buddy is diving in a full wet suit. Both of us will wear hoods. In this situation, ___ is likely an issue we need to avoid before the dive. - Answer: overheating True or False: I need a dive gear bag to carry my equipment in a bag specifically designed to survive the stresses of diving - Answer: True When choosing a gear bag, I should choose one ___ for the gear I have - Answer: slightly larger than what I need Of the following instruments, which three are primary instruments that I would normally have while diving? - Answer: SPG, dive computer, compass True or False: If I am using dive tables instead of a dive computer, I will need a dive timer and depth gauge - Answer: True It's a sunny day and I'm on a dive boat with no shade. It would be a good idea to cover my gear, including instruments, with a towel - Answer: True