Free PADI Dive Skills Questions and Answers — Questions and Answers
Question 1: With the exception of: A diver hurt by underwater life may exhibit the following symptoms and indicators:
- Localized, agonizing pain
- Heart arrest and respiratory arrest
- Nail beds and cherry red lips (Correct answer)
- Localized edema or inflammation
Correct answer: Nail beds and cherry red lips
Symptoms like localized pain, swelling, or even severe systemic reactions are common when a diver is injured by marine life. However, 'nail beds and cherry red lips' are not typical indicators of such injuries. Cherry red lips are more commonly associated with carbon monoxide poisoning, which is unrelated to marine life encounters, making it the exception.
Question 2: If you see a diver acting foolishly while on a deep dive, the best course of action to help them is to:
- Bring him down to a lower level
- Instruct him to swim horizontally and keep an eye on his oxygen supply until he feels better.
- Bring him up to a lower level. (Correct answer)
- Instruct him to take deep, slow breaths.
Correct answer: Bring him up to a lower level.
A diver acting foolishly on a deep dive is likely experiencing nitrogen narcosis, often called 'rapture of the deep,' caused by the increased partial pressure of nitrogen at depth. The most effective and immediate treatment is to ascend to a shallower depth. This reduces the nitrogen partial pressure, alleviating the narcotic effects and allowing the diver to regain clear thinking.
Question 3: The main ocean currents move clockwise in the ______________Â hemisphere and counterclockwise in the _____________Â hemisphere.
- Northern and Southern (Correct answer)
- The northeast and the southeast
- Western/Eastern
- Eastern/Western
Correct answer: Northern and Southern
The Coriolis effect, caused by the Earth's rotation, deflects moving objects like ocean currents. In the Northern Hemisphere, this deflection is to the right, causing major ocean currents to circulate in a clockwise direction. Conversely, in the Southern Hemisphere, the deflection is to the left, leading to a counterclockwise circulation pattern.
Question 4: Ocean currents are mostly caused by two key environmental factors:
- Everything mentioned above
- The warmth of the water and upwelling
- The wind and rotation of Earth (Correct answer)
- The force of gravity and tide caused by the sun and moon
Correct answer: The wind and rotation of Earth
The primary forces driving major ocean currents are wind and the Earth's rotation. Wind transfers energy to the ocean surface, initiating current movement, while the Coriolis effect (due to Earth's rotation) deflects these currents, creating large-scale circulation patterns known as gyres. Other factors like temperature and salinity also play roles, but wind and rotation are the dominant drivers.
Question 5: In an area with a flat, sandy bottom and often poor visibility, you misplaced a dive knife. What is the best search pattern to use in order to locate this object?
- use a line to expand a circle (Correct answer)
- square-shaped design
- "U" shape using a compass
- sweeping "V" shape
Correct answer: use a line to expand a circle
For searching a small, lost object in poor visibility on a flat, sandy bottom, an expanding circular search pattern is highly effective. The diver secures a line to a central point and then swims in progressively wider circles. This systematic method ensures thorough coverage of the area, minimizing the chance of missing the object in challenging conditions.
Question 6: A 16 kg lift BCD is being worn by a diver. After a little while, he discovers an anchor underwater and understands that he needs to fully fill his BCD in order to lift it. In this situation, what course of action ought he to take?
- Attach a line to the anchor, fasten it to his friend's BCD, slightly inflate each BCD, and swim up gradually.
- Gently hold the anchor, blow up his BCD, climb gradually, and be prepared to let go of air if he climbs too quickly.
- With both of his BCDs completely deflated, he would kick up as hard as he can while gripping the anchor with his friend.
- Put the anchor down and return later with a lifting apparatus. (Correct answer)
Correct answer: Put the anchor down and return later with a lifting apparatus.
Attempting to lift a heavy object like a 16 kg anchor using a BCD designed for buoyancy control is extremely dangerous. Over-inflating the BCD for this purpose can lead to an uncontrolled, rapid ascent, which carries a high risk of decompression sickness or lung overexpansion injury. The safe and responsible course of action is to use appropriate lifting equipment designed for such loads.
Question 7: The ____________Â of the gases will ______________Â when diving at altitude, even though the percentage of gases in the atmosphere doesn't change.
- Viscosity / reduction
- Partial pressure / decrease (Correct answer)
- partial force / rise
- Stress / escalation
Correct answer: Partial pressure / decrease
At altitude, the atmospheric pressure is lower than at sea level. While the percentage of gases in the air remains constant, their partial pressure decreases proportionally with the lower ambient pressure. This means that for a given depth, the actual partial pressure of gases like nitrogen will be lower at altitude compared to sea level, requiring specific adjustments to dive planning.
Question 8: The compression rate for one adult rescuer receiving CPR should be:
- 60 per minute
- 120 per minute
- 80 per minute
- 100 per minute (Correct answer)
Correct answer: 100 per minute
Current guidelines for cardiopulmonary resuscitation (CPR) recommend a compression rate of 100 to 120 compressions per minute for adults. Maintaining this specific rate is crucial for ensuring adequate blood flow to vital organs during cardiac arrest. This rhythm helps maximize the effectiveness of chest compressions.
Question 9: When handling an unconscious diver on the surface, the main thing to remember is to:
- Look for a pulse.
- Find his friend and find out what transpired.
- Verify breathing (Correct answer)
- Take down their gear.
Correct answer: Verify breathing
When encountering an unconscious diver on the surface, the immediate and most critical step is to verify their breathing. Establishing whether the diver is breathing determines the urgency of rescue breathing and subsequent actions. Other steps, such as checking for a pulse or removing gear, follow this initial assessment of airway and breathing.
Question 10: If there are ripple marks, you can utilize them as a navigational assistance when conducting shore dives because you know they often run:
- In line with the coast (Correct answer)
- 45° tilt with respect to the coast
- perpendicular to the coast
- 90-degree angle with respect to the coast
Correct answer: In line with the coast
Ripple marks on a sandy bottom are typically formed by wave action and tend to run parallel to the shoreline. This consistent orientation makes them a reliable natural navigational aid for shore dives. Divers can follow these marks to maintain a consistent bearing relative to the coast, helping them navigate back to their entry or exit point.
Question 11: In the odd event that your friend is too far away and you find yourself out of the air in shallow water, you should:
- Swimming at a maximum speed of 18 meters per minute toward the surface, keep your head up and continuously emit the sound "ahhhh" as you exhale. (Correct answer)
- Hold your breath as long as you can as you swim toward the surface at a maximum speed of 18 meters per minute.
- Let go of your weight belt and approach the surface cautiously.
- As you swim slowly in the direction of your friend, constantly rap your tank to try to grab his attention.
Correct answer: Swimming at a maximum speed of 18 meters per minute toward the surface, keep your head up and continuously emit the sound "ahhhh" as you exhale.
If a diver runs out of air in shallow water with no buddy nearby, a controlled emergency swimming ascent (CESA) is the recommended procedure. This involves swimming directly to the surface at a safe rate (no faster than 18 meters/60 feet per minute) while continuously exhaling with an 'ahhhh' sound. Continuous exhalation is vital to prevent lung overexpansion injury as the ambient pressure decreases during ascent.
Free PADI Dive Skills Questions and Answers
With the exception of: A diver hurt by underwater life may exhibit the following symptoms and indicators: