1. Padi Diving Manual Free

Name Date Open Water Diver Course Knowledge Review – 1 ANSWER KEYAnswer the following questions and bring this completed Knowledge Review with you to your next training session.1. True or False. An object is neutrally buoyant when it displaces an amount of water less than its own weight.

Explain why buoyancy control, both on the surface and underwater, is one of the most important skills you can master. On the surface: To conserve energy while resting or swimming. Underwater: To stay off the bottom and avoid crushing or damaging delicate aquatic life.3. Fill in the blanks with the appropriate words: fresh water or salt water. “The same object would be more buoyant in salt water than it would be in fresh water.”4.

True or False. “Because water is much denser than air, the pressure change for a given distance ascent or descent is significantly greater in water than in air.’’ True5. Complete the following chart for a sealed flexible bag, full of air at the surface. Depth Pressure Volume Density 0' 1 bar/ATM 1 x1 1/210m/33' 2 bar/ATM 1/4 x230m/99' 4 bar/ATM x440m/132' 1/5 5 bar/ATM x56. Circle the letter of the best definition for a squeeze. A condition that causes pain and discomfort when the pressure outside an air space of your body is less than the pressure inside an air space. A condition that causes pain and discomfort when the pressure inside an air space of your body is less than the pressure outside an air space.495DT Ver 1.0 (Rev 10/10) PADI © 2010 7.

Check each statement that describes a technique used to equalize air spaces during descent:  a. Block your nose and attempt to gently blow through it. Swallow and wiggle the jaw from side to side. Block your nose and attempt to gently blow through it while swallowing and wiggling the jaw from side to side.8. State how often you should equalize your air spaces during descent. Every few metre/feet, before discomfort is felt.9.

True or False. “If you feel discomfort in your ears while descending, continue downward until the discomfort is gone.” False10. State the most important rule in scuba diving. Breathe continuously and never, never hold your breath.11. Circle the letter of the best definition for a reverse block. A condition that occurs when expanding air cannot escape from a body air space during ascent, causing pain and discomfort. A condition that occurs when expanding air escapes from a body air space during ascent, causing pain and discomfort.12.

Describe what action you should take if you feel discomfort during ascent due to air expansion, whether in your ears, sinuses, stomach, intestines or teeth. Slow or stop ascent, descend a metre/few feet and allow trapped air to work its way out.13.

When scuba diving, why must your nose be enclosed in the mask? To exhale into it and equalize.14. Explain the best way to prevent water from entering your scuba tank. Never allow a tank to be completely emptied of air pressure.15. Circle the appropriate answer. The most important feature for consideration when selecting a regulator is: a.

The number of hoses it has c. Ease of breathing d.

Size Name Date Open Water Diver Course Knowledge Review – 2 ANSWER KEYAnswer the following questions and bring this completed Knowledge Review with you to your next training session.1. “Underwater, objects appear 33 percent and/or.”  a. Smaller, further away  b. Larger, closer2. Since it travels about four times faster in water than in air, you will have difficulty determining the origin of underwater.

Fill in the blank with the appropriate word: faster or slower. “Water conducts heat away from your body faster than air does.”4. Describe what you should do if you begin shivering continuously underwater.

Get out of the water, dry off and seek warmth.5. Of the procedures you can follow to compensate for the increased resistance of water whilediving, check those listed here: a. Streamline yourself and your equipment. Avoid rapid, jerky movements. c.Move slowly and steadily  d. Pace yourself.6. Check the statement that best describes the proper breathing pattern for diving. Consistently rapid and shallow.

Consistently slow and deep.7. It is easy to prevent overexertion while diving. Check the proper preventative measures listed here. Move slowly and avoid extended strenuous activity. Use your arms rather than your legs for propulsion underwater. Know your physical limits.8.

Explain what to do if you become overexerted while diving. Under water: Stop all activity, breathe deeply and rest. Hold onto an object for support if possible. At the surface: Establish buoyancy and stop moving. Rest and catch your breath. Once recovered: move at slower pace.496DT Ver 1.0 (Rev 10/10) PADI © 2010 9. Check each statement that describes a technique used for airway control:  a.

Use your tongue as a splash guard by placing the tip on the roof of your mouth. Inhale slowly. Avoid rapid, jerky movement.

Inhale cautiously.10. Explain why it is important not to wear a tight-fitting hood. A hood that’s too tight can cause changes in the heart rate due to compression of the arteries in the neck.11. Check the appropriate answer.

The most important feature of any weight system is:  a. The size and shape of the weights. The ease of adjustment. A quick-release mechanism.12. An alternate air source should be , so it can be quickly and easily identified by a diver needing the device. Tucked under the weight belt  b. Conspicuously marked13.

Describe where you should attach an alternate air source to your body. In the triangular area between your mouth and the lower corners of your rib cage.14. True or False. A dive knife is used as a tool (to measure, pry, dig, cut and pound), but is not intended to be, nor should be, used as a weapon. Identify the meaning of the standard hand signal illustrated here.

Distress, help  c. Explain how to check for proper weighting. You should float at eye level with an empty BCD and while holding a normal breath.17.

List and describe the steps of the predive safety check and explain when you should use this check. BWRAF – B-BCD, W-Weights, R-Releases, A-Air, F-Final ok. Should be done before each dive. Name Date Open Water Diver Course Knowledge Review – 3 ANSWER KEY Answer the following questions and bring this completed Knowledge Review with you to your next training session.1.

There are several factors that affect visibility underwater. Check those listed here. Water movement  c. Ambient pressure  d.

Suspended particles2. True or False. “To avoid problems associated with diving in clear water, use an accurate depth gauge, refer to it frequently, and it is recommended that you use a line for ascents and descents.’’ True3. Explain what you should do if you find yourself caught in a current at the surface. Swim perpendicular to the current or establish buoyancy, signal for assistance and wait for help.4.

True or False. “You will find it easier to swim against a mild current along the bottom where it is generally weaker than on the surface.” True5. If a current is present, you should generally begin your dive:  a.

With the current. Across the current. Against the current.6. Nearly all injuries from aquatic life are caused by action on the part of the animal. Unpredictable  b. Unprovoked  c.

Describe what you should do if you spot an aggressive animal underwater. Remain still and calm on the bottom and watch what it does. Calmly move away from the area by swimming on the bottom and exit.8. True or False.

“For safety and enjoyment when diving in a new area or engaging in an new activity, be sure to obtain a proper orientation.” True9. A rip current can be recognized as a line of turbid, foamy water moving  a. Toward shore. Parallel to shore.497DT Ver 1.0 (Rev 10/10) PADI © 2010 10. Outline three ways to prevent or control most diving problems that occur at the surface.

Dive within my limitations. Relax while I dive. Maintain positive buoyancy at the surface.11. True or False. “The first step in assisting another diver with a problem at the surface is to talk to him, offering encouragement and persuading him to relax.” False12.

Draw lines to connect the low-on-air/out-of-air emergency options to when you would use them:Buoyant emergency ascent When low on air, not out of airControlled emergency swimming ascent When buddy is nearNormal ascent When buddy is too far awayAlternate air source ascent When buddy is far away and you’re deeper than 9 metres/30 feet13. If you become entangled underwater, you should:  a. Twist and turn to free yourself. Stop, think and then work slowly and calmly to free yourself.14. True or False. “With an unconscious diver, the primary concern is to remove him from the water.” False15. True or False.

Once removed from the water, an unconscious diver should be administered oxygen if available. True Name Date Open Water Diver Course Knowledge Review – 4 ANSWER KEY Answer the following questions and bring this completed Knowledge Review with you to your next training session.1. A detailed log book is the proof-of experience documentation typically requested in many diving situations. Check those listed here. For additional diver training  b. By dive stores when buying diving equipment  c.

When diving at resorts or on boats2. Explain how to prevent problems with contaminated air. Have tanks filled only with pure, dry, filtered compressed air from a reputable air station.3. State the two ways divers prevent problems with oxygen. Never fill a tank with pure oxygen b. Do not use enriched air or a cylinder marked for enriched air unless you are properly trained.4.

Check each symptom related to nitrogen narcosis:  a. Impaired coordination  b.

Foolish behavior  c. Joint and limb pain5. To prevent nitrogen narcosis:  a. Skip breathe. Equalize your air spaces early and often. Avoid deep dives.6. Check each symptom which may be related to decompression sickness:  a.

Foolish behavior  b. Moderate tingling  c. Cherry-red lips  d.

Weakness and prolonged fatigue7. Outline the first aid procedure for assisting someone with decompression illness. Get the person into medical care. Prevent/treat for shock, administer oxygen, if necessary, CPR. Put diver in a left-side down position.8. True or False. “When using either version of the Recreational Dive Planner or any dive computer, you must ascend at a rate that does not exceed 18 metres/60 feet per minute.’’ True498DT Ver 1.0 (Rev 10/10) PADI © 2010 9.

Match the following by placing the correct letter in the blank. Maximum depth limit for Open Water Divers. Maximum depth limit for divers with training and experience beyond the Open Water Diver level. Maximum depth limit for divers with Deep Diver training. A18 metres/60 feet B40 metres/130 feet C30 metres/100 feet10. According to the Recreational Dive Planner, the no-decompression limit for 18 metres/60 feet is: Metric – 56 minutes Imperial – 55 minutes11.

What is your pressure group after a dive to 14 metres/46 feet for 24 minutes? Metric – E Pressure Group Imperial – F Pressure Group12. After a dive, you are in pressure group K. What will your new pressure group be after a 34-minute surface interval? F Pressure Group13. A diver in Pressure Group G plans a dive to 17 metres/56 feet. What is the maximum allowable bottom time according to the Recreational Dive Planner?

Maximum Allowable Bottom Time14. Indicate the final pressure group upon surfacing after the following series of dives. First dive: 16 metres/50 feet for 23 minutes; surface interval: 1:30.

Second dive: 10 metres/35 feet for 46 minutes. Final Pressure Group = M15. Indicate the final pressure group upon surfacing after the following series of dives.

First dive: 18 metres/60 feet for 15 minutes; surface interval: 1:00. Second dive: 12 metres/40 feet for 30 minutes. Final Pressure Group = K Name Date Open Water Diver Course Knowledge Review – 5 ANSWER KEY Answer the following questions and bring this completed Knowledge Review with you to your next training session.1. Describe the three required situations in which a safety stop should be made. A dive has been to 30 metres/100 feet or deeper. Pressure group at end of dive is within three pressure groups of the no-decompression limit.

A dive is made up to any limit on the Recreational Dive Planner.2. “If you accidentally exceed a no-decompression limit or an adjusted no-decompression limit by no more than 5 minutes, you should slowly ascend at a rate not faster than 18 metres/60 feet per minute to 5 metres/15 feet and remain there for minutes prior to surfacing. After reaching the surface, do not dive for at least hours.”  a. 8 minutes, 6 hours  b.

15 minutes, 24 hours3. State the altitude above which the Recreational Dive Planners should not be used unless special procedures are followed. 300 metres/1000 feet4. True or False. “To be reasonably assured you remain symptom free from decompression sickness when flying in a commercial jet airliner after diving, wait 12 hours.’’ True5. Explain the procedure you must follow when planning a dive in cold water or under strenuous condi- tions using the Recreational Dive Planner. Plan the dive as though the depth were 4 metres/10 feet deeper than it actually is.6.

Padi Diving Manual Free

What is the minimum surface interval required between a dive to 18 metres/60 feet for 40 minutes followed by a dive to 14 metres/50 feet for 60 minutes? Metric – Minimum Surface Interval = 0:28 (table) Imperial – Minimum Surface Interval = 1:12499DT Ver 1.0 (Rev 10/10) PADI © 2010 7.

What is the minimum surface interval required between a dive to 20 metres/70 feet for 29 minutes followed by a dive to 14 metres/50 feet for 39 minutes? Metric – Minimum Surface Interval = 0:00 Imperial – Minimum Surface Interval = 0:04 8.

With reference to the compass heading shown in Figure 1, select the figure letter that indicates a re- ciprocal heading. BReciprocal heading is shown by the figure letter: 9. What is the purpose of the PADI System of continuing education? Continuing education courses let you: 1. Do things.10. State the purpose of PADI Discover Local Diving: To provide a single, supervised open water experience to a new diving area.11. When should you consider taking PADI Scuba Review?

If I go several months or longer without diving.12. What is the relationship between Adventure Dives, Advanced Open Water course dives and Specialty Diver course dives? Adventure Dives can be credited toward the Advanced Open Water Diver course and/or corresponding Specialty Diver course.13. What is a Course Evaluation Questionnaire (CEQ), and what is it’s purpose? PADI CEQs are surveys used to recognize outstanding performance by an instructor and to verify that all training elements were conducted in every course.