PADI Open Water Certification Chapter 1 with 100% Correct Answers 2024

1. What will the buoyancy of an object be (positive, neutral, or negative) if it displaces an amount of water more than its own weight Answer positively buoyant 2. What will the buoyancy of an object be (positive, neutral, or negative) if it displaces an amount of water less than its own weight Answer negatively buoyant 3. What will the buoyancy of an object be (positive, neutral, or negative) if it displaces an amount of water equal to its own weight Answer neutrally buoyant 4. Why is buoyancy control, both at the surface and underwater, one of the most important skills a diver can master Answer It lets you control where you are in the water. Positive buoyancy allows you to conserve energy at the surface; neutral buoyancy allows you to swim effortlessly and avoid injuring aquatic life on the sea floor. 5. What two (or three ;)) items control a diver's buoyancy Answer 1) lead weights (within a weight system) 2) buoyancy control device (BCD) 3) lungs 6. How does the buoyancy of an object differ in fresh water compared to salt water Answer Since buoyancy results from the weight of water volume displaced, the heavier the water, the greater the buoyancy for a given displacement. Salt water weighs more than fresh water, so you're more buoyant in salt water than in fresh. How does lung volume affect buoyancy Answer When you exhale, you decrease the volume of your lungs and the amount of water you displace, which makes you less buoyant . . . and vice versa for inhaling.