PADI Open Water Diver Course - Chapter One

2/23/06 11:56 AM Page 73. Knowledge Review . Chapter 1. 1. True or False. An object is neutrally buoyant when it displaces an amount of Water less than its own 2. Explain why buoyancy control, both on the surface and underwater, is one of the most important skills you can master: On the surface: _____. Underwater: _____. 3. Fill in the blanks with the appropriate words: freshwater or saltwater. The same object would be more buoyant in _____ than it would be in _____.. 4. True or False. Because Water is denser than air, the pressure change for a given dis- tance ascent or descent is significantly greater in Water than in air. _____. 5. Complete the following chart for a sealed flexible bag, full of air at the surface.

122 Open Water Diver Manual 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.

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