# Quiz 1 A Question Menu Question 1 Question

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Quiz 1 -A Question Menu Question 1 Question 6 Question 2 Question 7 Question 3 Question 8 Question 4 Question 9 Question 5 Question 10 Return to Section Menu Next Slide Quiz 1 -A Overview

Quiz 1 – A Question n 1 Something underwater that does not float and does not sink is: A. positively buoyant. B. negatively buoyant. C. neutrally buoyant. D. partially buoyant. Return to Question Menu Next Slide Quiz 1 -A Question 1 Previous Slide Prescriptive

Quiz 1 – A Question n 2 If an object is neutrally buoyant in salt water. What will probably happen to the object if you put it into fresh water? A. The object will sink. B. The object will float. C. The object will not sink or float. D. I cannot tell from the question. Return to Question Menu Next Slide Quiz 1 -A Question 2 Previous Slide Prescriptive

Quiz 1 – A Question n 3 Imagine a diver is 33 metres/99 feet underwater. The water pressure at this depth would be ______times more than the pressure at the surface. A. two B. three C. four D. five Return to Question Menu Next Slide Quiz 1 -A Question 3 Previous Slide Prescriptive

Quiz 1 – A Question n 4 Imagine you hold a glass full of air upside down and you take it to the bottom of the swimming pool without tipping it. The density (thickness) of the air inside the glass will be ____ at the surface. A. less than B. greater than C. the same as D. less than or greater than Return to Question Menu Next Slide Quiz 1 -A Question 4 Previous Slide Prescriptive

Quiz 1 – A Question n 5 What should you do if you cannot equalize (clear) your ears or sinuses while you are descending (going down)? A. Continue descending (going down), but go slower. B. Stop descending (going down) and try again to equalize (clear) by blowing harder. C. Stop and ascend (go up) a few metres/feet and try to equalize (clear) again. D. Surface and wait one minute before descending (going down) again. Return to Question Menu Next Slide Quiz 1 -A Question 5 Previous Slide Prescriptive

Quiz 1 – A Question n 6 What should you do to prevent mask squeeze (a sucking or pulling feeling on your face and eyes)? A. Make an ah-h-h-h sound. B. Pinch your nose and blow against it. C. Wiggle your jaw from side to side. D. Blow into your mask through your nose. Return to Question Menu Next Slide Quiz 1 -A Question 6 Previous Slide Prescriptive

Quiz 1 – A Question n 7 Imagine you put air into a balloon underwater at 10 metres/33 feet and then you take it to the surface. The air in the balloon will: A. stay the same size as it was at 10 metres/33 feet. B. expand to twice the size as it was at 10 metres/33 feet. C. expand to four times the size as it was at 10 metres/33 feet. D. expand to eight times the size as it was at 10 metres/33 feet. Return to Question Menu Next Slide Quiz 1 -A Question 7 Previous Slide Prescriptive

Quiz 1 – A Question n 8 What can happen to you if you hold your breath while ascending (going up) on a scuba dive? A. Your lungs can over expand which could cause serious injury. B. Your scuba equipment may not work properly. C. You might hurt your ears or sinuses. D. Nothing would happen to you. Return to Question Menu Next Slide Quiz 1 -A Question 8 Previous Slide Prescriptive

Quiz 1 – A Question n 9 What is the most important feature of a scuba regulator? A. How easy it is to take care of it. B. How easy it is to breathe from it. C. How much it costs. D. Whether the second stage has an adjustment knob or not. Return to Question Menu Next Slide Quiz 1 -A Question 9 Previous Slide Prescriptive

Quiz 1 – A Question n 10 Why is it important to practice the buddy system whenever you go diving? A. Diving is easier with a buddy. B. Diving is safer with a buddy. C. Diving is more fun with a buddy. D. All of the above. Return to Question Menu Next Quiz 1 -A Question 10 Previous Slide Prescriptive

Quiz 2 – A Question Menu Question 1 Question 6 Question 2 Question 7 Question 3 Question 8 Question 4 Question 9 Question 5 Question 10 Return to Section Menu Next Slide Quiz 2 -A Overview Previous Slide

Quiz 2 – A Question n 1 When you look at things underwater they often seem ____ than when you look at them on the surface. A. farther away and smaller B. nearer and larger C. nearer and smaller D. farther away and larger Return to Question Menu Next Slide Quiz 2 -A Question 1 Previous Slide Prescriptive

Quiz 2 – A Question n 2 Sound travels faster in water and it is difficult to tell: A. where the sound is coming from. B. how loud the sound is. C. what caused the sound. D. whether the sound is normal. Return to Question Menu Next Slide Quiz 2 -A Question 2 Previous Slide Prescriptive

Quiz 2 – A Question n 3 If you get cold while diving and you cannot stop shivering (shaking), what should you do? A. Try to warm up by swimming harder. B. Do not move your arms and legs to stay warm. C. Stop diving right away, get out of the water, and change into something warm. D. Try to save your body heat by moving slowly. Return to Question Menu Next Slide Quiz 2 -A Question 3 Previous Slide Prescriptive

Quiz 2 – A Question n 4 You want to move slowly and gradually underwater. Why? A. It is hard for you to swim fast against water. B. So you use less air. C. So you do not get tired. D. All of the above. Return to Question Menu Next Slide Quiz 2 -A Question 4 Previous Slide Prescriptive

Quiz 2 – A Question n 5 When breathing underwater while scuba diving, you should: A. use airway control. B. breathe continuously (breathe always, never hold your breath). C. breathe slowly and deeply. D. All of the above. Return to Question Menu Next Slide Quiz 2 -A Question 5 Previous Slide Prescriptive

Quiz 2 – A Question n 6 Proper fitting wet suits keep you warm by: A. reducing the amount of water moving in and out of your suit. B. increasing the amount of water moving in and out of your suit. C. increasing blood flow to the skin. D. providing an insulating layer of air. Return to Question Menu Next Slide Quiz 2 -A Question 6 Previous Slide Prescriptive

Quiz 2 – A Question n 7 The most important feature of a weight system is: A. you can use it without your hands. B. you can remove the weight easily with one hand in an emergency. C. a design that keeps the weight from moving around during the dive. D. padding to protect you from accidental injury. Return to Question Menu Next Slide Quiz 2 -A Question 7 Previous Slide Prescriptive

Quiz 2 – A Question n 8 The best place for you to carry an alternate air source is: A. loose by your side so you can find it fast. B. in your pocket. C. clipped to your tank. D. attached to the triangle area between your chin and your chest. Return to Question Menu Next Slide Quiz 2 -A Question 8 Previous Slide Prescriptive

Quiz 2 – A Question n 9 Waving your arms at the surface indicates that: A. you are trying to get your buddy to look at you. B. you want the dive boat to pick you up. C. you are okay! D. you need help! Return to Question Menu Next Slide Quiz 2 -A Question 9 Previous Slide Prescriptive

Quiz 2 – A Question n 10 How can you maintain the buddy system on a scuba dive? A. Follow another buddy team with more experience. B. Use an underwater compass. C. Decide who will lead the dive, which side of the leader you will be on, and where you are going to go. D. Always stay on the left of the dive boat. Return to Question Menu Next Quiz 2 -A Question 10 Previous Slide Prescriptive

Quiz 3 – A Question Menu Question 1 Question 6 Question 2 Question 7 Question 3 Question 8 Question 4 Question 9 Question 5 Question 10 Return to Section Menu Next Slide Quiz 3 -A Overview Previous Slide

Quiz 3 – A Question n 1 You should take a local area orientation dive whenever: A. you dive anywhere, even if you dived there before. B. you dive some place new. C. you dive without advanced training. D. you are not diving with an instructor. Return to Question Menu Next Slide Quiz 3 -A Question 1 Previous Slide Prescriptive

Quiz 3 – A Question n 2 How can you avoid vertigo (dizziness and confusion) on a dive? A. Close your eyes. B. Turn slowly while you look up. C. Ascend (go up) and descend (go down) along the bottom or a reference line. D. All of the above. Return to Question Menu Next Slide Quiz 3 -A Question 2 Previous Slide Prescriptive

Quiz 3 – A Question n 3 Underwater visibility (how far you can see horizontally) can be affected by: A. water movement. B. weather. C. suspended particles (floating silt) in the water. D. All of the above. Return to Question Menu Next Slide Quiz 3 -A Question 3 Previous Slide Prescriptive

Quiz 3 – A Question n 4 Imagine there is a mild current on your dive. You should begin your dive: A. swimming with the current pushing you along. B. swimming against or into the current. C. swimming across the current pushing you sideways. D. None of the above. Return to Question Menu Next Slide Quiz 3 -A Question 4 Previous Slide Prescriptive

Quiz 3 – A Question n 5 Most diver injuries caused by aquatic animals happen because: A. the animal thinks you are food. B. the animal is aggressive (like a bully). C. the animal is protecting itself from you. D. you did not feed the animal. Return to Question Menu Next Slide Quiz 3 -A Question 5 Previous Slide Prescriptive

Quiz 3 – A Question n 6 You can prevent most surface emergencies (problems) by: A. diving only from boats. B. diving with a skilled buddy in a familiar place. C. using the best equipment made. D. reducing your physical effort and making yourself float. Return to Question Menu Next Slide Quiz 3 -A Question 6 Previous Slide Prescriptive

Quiz 3 – A Question n 7 What is the first thing you should do with an injured diver at the surface? A. Make the diver float and check to see if the diver is breathing. B. Get the diver out of the water. C. Find out what happened. D. Give the diver emergency oxygen. Return to Question Menu Next Slide Quiz 3 -A Question 7 Previous Slide Prescriptive

Quiz 3 – A Question n 8 Imagine you accidentally get tangled in something. What should you do first? A. Stop, think and slowly untangle yourself. B. Try to turn around and see where you are tangled. C. Ask your buddy to help untangle you. D. Take off your scuba unit. Return to Question Menu Next Slide Quiz 3 -A Question 8 Previous Slide Prescriptive

Quiz 3 – A Question n 9 Imagine you are very low on air and about to run out. What would you do? 5 th 1 st 6 th 2 nd 4 th 3 rd Return to Question Menu - buoyant emergency ascent (dropping your weight system) - normal ascent (going up normally) - in the future you would look at your gauges more often so this would not happen - alternate air source ascent (using your buddy’s alternate air source) - buddy breathing ascent (sharing a single source of air with your buddy) - controlled emergency swimming ascent (CESA swimming up to the surface saying ah-h-h-h) Next Slide Quiz 3 -A Question 9 Previous Slide Prescriptive

Quiz 3 – A Question n 10 After getting an unresponsive (unconscious or dazed) diver out of the water, you should keep checking for ____. A. uncontrollable shaking. B. panic (stress). C. breathing and pulse. D. water in the lungs. Return to Question Menu Next Quiz 3 -A Question 10 Previous Slide Prescriptive

Quiz 4 – A Question Menu Question 1 Question 6 Question 2 Question 7 Question 3 Question 8 Question 4 Question 9 Question 5 Question 10 Return to Section Menu Next Slide Quiz 4 -A Overview Previous Slide

Quiz 4 – A Question n 1 Besides being required for diver training your log book is something that: A. gives you a record of your dive experience. B. is required by law in most countries. C. has no purpose except for your personal interest. D. is required to purchase diving equipment. Return to Question Menu Next Slide Quiz 4 -A Question 1 Previous Slide Prescriptive

Quiz 4 – A Question n 2 Diving with enriched air requires special training and procedures (rules). Using enriched air without proper training and procedures can cause: A. your dive computer to shut down. B. no real harm. C. bad air. D. oxygen toxicity (poisoning). Return to Question Menu Next Slide Quiz 4 -A Question 2 Previous Slide Prescriptive

Quiz 4 – A Question n 3 Imagine you are an Advanced Open Water Diver. You begin to act foolishly at a depth of 30 metres/100 feet. What might you be experiencing? A. Decompression illness. B. Nitrogen narcosis. C. Decompression sickness. D. Oxygen toxicity (poisoning). Return to Question Menu Next Slide Quiz 4 -A Question 3 Previous Slide Prescriptive

Quiz 4 – A Question n 4 Decompression sickness (DCS) is a condition that can be life threatening. What forms in the bloodstream and tissues that can cause this condition? A. Nitrogen bubbles. B. Poisons. C. Body waste. D. None of the above. Return to Question Menu Next Slide Quiz 4 -A Question 4 Previous Slide Prescriptive

Quiz 4 – A Question n 5 Pain in one area, weakness, tingling, numbness and not being able to move your arms or legs are common signs and symptoms of: A. not thinking clearly. B. oxygen poisoning. C. contaminated air (bad air). D. DCS - nitrogen bubbles blocking blood circulation/flow in your body after a dive. Return to Question Menu Next Slide Quiz 4 -A Question 5 Previous Slide Prescriptive

Quiz 4 – A Question n 6 When using the Recreational Dive Planner dive tables, you should ascend (go up) no faster than _____ per minute. A. 6 metres/20 feet B. 12 metres/40 feet C. 18 metres/60 feet D. 24 metres/80 feet Return to Question Menu Next Slide Quiz 4 -A Question 6 Previous Slide Prescriptive

Quiz 4 – A Question n 7 The maximum depth for all recreational scuba divers, even experienced divers, is: A. 18 metres/60 feet. B. 30 metres/100 feet. C. 40 metres/130 feet. D. 58 metres/190 feet. Return to Question Menu Next Slide Quiz 4 -A Question 7 Previous Slide Prescriptive

Quiz 4 – A Question n 8 Imagine you dive to a depth of 11 metres/39 feet and stay for 46 minutes. What would your pressure group (PG) be on your Recreational Dive Planner? A. J B. K C. P D. M Return to Question Menu Next Slide Quiz 4 -A Question 8 Previous Slide Prescriptive Table Prescriptive Wheel

Quiz 4 – A Question n 9 Imagine you have made a dive and you have stayed on the surface for a while. After this surface interval your pressure group on the Recreational Dive Planner is K. What is the maximum amount of bottom time you can use doing a repetitive (second) dive to 17 metres/56 feet? A. 16 minutes B. 44 minutes C. 29 minutes D. 26 minutes Return to Question Menu Next Slide Quiz 4 -A Question 9 Previous Slide Prescriptive Table Prescriptive Wheel

Quiz 4 – A Question n 10 After a surface interval your pressure group on the Recreational Dive Planner is D. You want to do a repetitive (second) dive to 12 metres/38 feet for 32 minutes. What will be your new pressure group (PG) when you reach the surface? A. N B. P C. J D. G Return to Question Menu Previous Slide Quiz 4 -A Question 10 Prescriptive Table Prescriptive Wheel

Quiz 1 – A n n Question 2 Buoyancy - the weight of water volume displaced The heavier the water - the greater the buoyancy for a given displacement n Salt water weighs more than fresh water n You’re more buoyant in salt water than in fresh n An object neutrally buoyant in salt water will sink if put into fresh water Return to Question Quiz 1 -A Question 2 - PLG

Quiz 1 – A n n Question 7 In an open container - excess air bubbles out into the surrounding water during ascent In a closed flexible container - the air is trapped and expands as you ascend 10 m/33 ft. is 2 atmospheres If you inflate a balloon at 10 m/33 ft. and take it to the surface, it will expand to twice the size as it was at 10 m/33 ft. Return to Question Quiz 1 -A Question 7 - PLG

Quiz 1 – A n n n Question 9 The first stage reduces the high tank pressure to an intermediate pressure - (7 -10 bar/100 to 150 psi) above surrounding water pressure The second stage reduces this intermediate pressure to the water pressure surrounding you Easy breathing is the most important feature when selecting a regulator Return to Question Quiz 1 -A Question 9 - PLG

Quiz 1 – A Question n All good buddies work together by: n Agreeing on entry, exit points and dive objective n Agreeing upon time and depth limits n Establishing and reviewing communications n n n 10 Discussing how to stay together – what to do if separated Discussing emergency procedures Convenience, safety and fun Return to Question Quiz 1 -A Question 10 - PLG

Quiz 2 – A n n Question 6 Wet suits reduce heat loss - a layer of insulating foam neoprene over your skin Wet suits need to have a snug fit Your body quickly heats the water – as long as water remains trapped in the suit you stay warm If water circulates in and out of your suit – you lose a lot of heat to incoming cold water Return to Question Quiz 2 -A Question 6 - PLG

Quiz 2 – A n Question 9 You may need to communicate with someone on shore or on a boat while you are at the surface n Use slow and exaggerated movements n Waving your arms at the surface means “HELP!” n To signal you need assistance at the surface wave your arms or use an inflatable signal tube that alert boats to your presence at the surface. Return to Question Quiz 2 -A Question 9 - PLG

Quiz 2 – A Question n 10 To maintain a buddy system on a dive: n Agree on entry, exit point and dive objective n Agree upon time and depth limits n Establish and review communications n n Discuss how to stay together – what to do if separated Discuss emergency procedures Return to Question Quiz 2 -A Question 10 - PLG

Quiz 3 – A n Question 2 Vertigo - whirling feeling in which you tend to loose your balance n A feeling of dizziness and you can become confused n You can feel disorientated in very clear water n To avoid vertigo ascend and descend by using the bottom contours or a reference line Return to Question Quiz 3 -A Question 2 - PLG

Quiz 3 – A n n n Question 5 If you see a potentially aggressive animal - remain still and calm on the bottom If it stays in the area - calmly swim away along the bottom, keeping an eye on it and exit the water Injuries from animals that may seem aggressive, such as eels and stingrays, actually result from frightening animals, causing them to react defensively. Return to Question Quiz 3 -A Question 5 - PLG

Quiz 3 – A n n Question 7 If you have a problem at the surface - immediately establish buoyancy by either inflating your BCD or dropping your weights n Let your equipment do the work n Stop, breathe, think, then act. Need Help? Ask! If you are assisting an injured diver at the surface, immediately establish positive buoyancy and check to see if the diver is breathing. Return to Question Quiz 3 -A Question 7 - PLG

Quiz 4 – A n n Question 4 During a dive, the increase pressure causes nitrogen from the air you breathe to dissolve into your body tissues. Upon ascent - the excess nitrogen cannot stay dissolved in your body Nitrogen begins to come out of solution As nitrogen dissolves out of your body tissues - the excess nitrogen forms bubbles Return to Question Quiz 4 -A Question 4 - PLG

Quiz 4 – A n Question 8 Metric - Enter Table 1 along the top depth row labeled Start n n Follow the depth line to the right, use the exact or next greater depth – in this case the 12 metres column Follow the 12 metre column down until you find 46 minutes or the next greater time – in this case 49 minutes n n From 49 minutes, follow the horizontal row to the right to letter K Imperial - Enter Table 1 along the top depth row labeled Start n n n Follow the depth line to the right, use the exact or next greater depth – in this case the 40 foot column Follow the 40 foot column down until you find 46 minutes or the next greater time – in this case 48 minutes From 48 minutes, follow the horizontal row to the right to letter K Return to Question Quiz 4 -A Question 8 – PLG Table

Quiz 4 – A n Metric - Flip the RDP over and find pressure group K along the top row n n Question 9 Along the left side of Table 3 locate 18 metres and follow the row horizontally to the right until you are under pressure group K There you’ll find two numbers 30 in the white portion and 26 in the blue portion 26 minutes is the adjusted no decompression limit Imperial - Flip the RDP over and find pressure group K along the top row n n n Along the left side of Table 3 locate 50 feet and follow the row horizontally to the right until you are under pressure group K There you’ll find two numbers 29 in the white portion and 26 in the blue portion 26 minutes is the adjusted no decompression limit Return to Question Quiz 4 -A Question 9 – PLG Table

Quiz 4 – A Question n Metric - Flip the RDP over and find pressure group D along the top row n n 10 Along the left side of Table 3 locate 12 metres and follow the row horizontally to the right until you are under pressure group D n There you’ll find two numbers 26 in the white portion and 121 in the blue portion n 26 minutes RNT + 32 minutes ABT = 58 minutes TBT n Flip the RDP over and along the top depth row find 12 metres n Follow the 12 metre column down until you find 58 minutes or the next greater time n From 62 minutes, follow the horizontal row to the right to fine the letter N Imperial - Flip the RDP over and find pressure group D along the top row n Along the left side of Table 3 locate 40 feet and follow the row horizontally to the right until you are under pressure group D n There you’ll find two numbers 25 in the white portion and 115 in the blue portion n 25 minutes RNT + 32 minutes ABT = 57 minutes TBT n Flip the RDP over and along the top depth row find 40 feet n Follow the 40 foot column down until you find 57 minutes or the next greater time n From 60 minutes, follow the horizontal row to the right to fine the letter N Return to Question Quiz 4 -A Question 10 – PLG Table

Quiz 1 – A n n n Question 1 An object that is positive – floats An object that is negative – sinks If an object neither sinks nor floats it stays neutral Return to Question Quiz 1 -A Question 1 - PLG

Quiz 1 – A n n n Question 3 99 divide by 33 equals 3 Add one atmosphere for the surface Total equals 4 atmospheres Return to Question Quiz 1 -A Question 3 - PLG

Quiz 1 – A n n n Question 4 Air compresses under weight Water is weight As air compresses the molecules move closer together making the air more dense Return to Question Quiz 1 -A Question 4 - PLG

Quiz 1 – A n Question 5 If the pressure inside your ear does not match the pressure of the water outside your ear you’ll get an ear squeeze – the deeper you go the worse it gets! Return to Question Quiz 1 -A Question 5 - PLG

Quiz 1 – A n Question 6 Exhaling through your nose into your mask equalizes the pressure – this is why we wear a mask and not swimming goggles Return to Question Quiz 1 -A Question 6 - PLG

Quiz 1 – A n n Question 8 If you hold your breath you turn your lungs into a sealed container Sealed containers don’t allow air to escape when you ascend to the surface Return to Question Quiz 1 -A Question 8 - PLG

Quiz 2 – A n Question 1 Even though your eyes can focus with a mask, you still have some optical effects because light travels at different speeds in water and in air Return to Question Quiz 2 -A Question 1 - PLG

Quiz 2 – A n n Question 2 Sound travels four times faster underwater than in air It hits your ears at the same time - therefore you have difficulty telling its direction Return to Question Quiz 2 -A Question 2 - PLG

Quiz 2 – A n Question 3 No one said diving had to be wet or cold – use the right exposure suit protection and have fun while you dive! Return to Question Quiz 2 -A Question 3 - PLG

Quiz 2 – A n Question 4 You enjoy most things in life if you take your time – relax, conserve your energy and your air while diving Return to Question Quiz 2 -A Question 4 - PLG

Quiz 2 – A n n Question 5 Deep breathing is more efficient breathing For maximum breathing efficiency, you want to breathe slowly and deeply underwater Return to Question Quiz 2 -A Question 5 - PLG

Quiz 2 – A n Question 7 It doesn’t happen often but you might have to remove your weight system quickly – use one hand Return to Question Quiz 2 -A Question 7 - PLG

Quiz 2 – A n Question 8 You wear an alternate air source for your buddy – make sure your buddy can find it easily Return to Question Quiz 2 -A Question 8 - PLG

Quiz 3 – A n Question 1 Going somewhere new and exciting? – make sure you take a local area orientation and be informed about the dive site Return to Question Quiz 3 -A Question 1 - PLG

Quiz 3 – A n Question 3 Underwater visibility can be affected by many factors – if you can’t see there’s no sense diving! Return to Question Quiz 3 -A Question 3 - PLG

Quiz 3 – A n Question 4 You have more energy at the start of your dive so begin your dive by swimming against or into current – finish the dive with the current bringing you back Return to Question Quiz 3 -A Question 4 - PLG

Quiz 3 – A n Question 6 Stop your activity, stay calm, breathe, and make sure you’re buoyant if you’re struggling at the surface Return to Question Quiz 3 -A Question 6 - PLG

Quiz 3 – A n Question 8 Not looking where you’re going? If you get tangled just stop, breathe, think and slowly untangle yourself. Return to Question Quiz 3 -A Question 8 - PLG

Quiz 3 – A n Question 9 If you frequently monitor your submersible pressure gauge you’ll successfully avoid low on air or out of air situations. Return to Question Quiz 3 -A Question 9 - PLG

Quiz 3 – A n Question 10 Checking for breathing and a pulse is most important when caring for an unresponsive diver out of the water. Return to Question Quiz 3 -A Question 10 - PLG

Quiz 4 – A n Question 1 A diver’s log book is like a passport – it tells you where you’ve been and when. Return to Question Quiz 4 -A Question 1 - PLG

Quiz 4 – A n Question 2 Enriched air has some advantages – but you can have oxygen problems using it within recreational depth limits Return to Question Quiz 4 -A Question 2 - PLG

Quiz 4 – A n Question 3 Narcosis impairs a diver’s judgment and coordination, and may create a false sense of security, cause disregard for safety and other foolish behavior. Return to Question Quiz 4 -A Question 3 - PLG

Quiz 4 – A n Question 5 To reduce the risk of DCS, get in the habit of always diving with a conservative margin between the time you actually dive, and the maximum allowed. Return to Question Quiz 4 -A Question 5 - PLG

Quiz 4 – A n Question 6 Slowly ascend from every dive. Return to Question Quiz 4 -A Question 6 - PLG

Quiz 4 – A n Question 7 Deep diving requires special training – take an Advance Course for an introduction to what lurks below! Return to Question Quiz 4 -A Question 7 - PLG

Quiz 4 – A n Question 8 Side 1 set the white triangle to 11 metres/39 feet – in this case 12 metres/40 feet n n n Move yellow pointer triangle to point to 46 minutes Read up the pointer centerline until it crosses 12 metres/ 45 foot depth curve To the right of this intersection, find the pressure group whose arrow pierces 12 metres/45 feet - pressure group K Return to Question Quiz 4 -A Question 8 – PLG Wheel

Quiz 4 – A n n n Question 9 Side 2 indicated K diver Side 1 find the letter K in the white p. g. index and the black arrow that goes with it Set the tip of this arrow so that it touches (not pierces) the 17 metres/56 foot depth curve – in this case 18 metres/60 feet Hold the disk in place, rotate the pointer until the centerline is aligned with the NDL mark on the 18 metres/60 foot curve The yellow triangle at the end of the pointer should point to 26 minutes maximum allowable bottom time Return to Question Quiz 4 -A Question 9 – PLG Wheel

Quiz 4 – A Question n n n 10 Side 2 indicated D diver Side 1 find the letter D in the white p. g. index and the black arrow that goes with it Set the tip of this arrow so that it touches (not pierces) the 12 metres/38 foot depth curve – in this case 12 metres/40 feet Hold the disk in place, rotate the pointer until the centerline is aligned with 32 minutes Read up the pointer centerline until it crosses the 12 metres/40 foot depth curve Find the pressure groups whose arrow pierces 12 metres/40 feet – pressure group N Return to Question Quiz 4 -A Question 10 – PLG Wheel