SCUBA - Open water final exam 2023 with 100% correct answers

To help ensure a safer and more enjoyable dive, the Open Water diver should Plan your dive and dive your plan When underwater, objects appear to be larger and closer than on land Sound travels quickly underwater, so much so that divers have a hard time locating the origin of a sound source true A proper dive plan should include Choosing a safe point of entry and exit for the dive, the maximum depth and bottom time for the dive, and making sure that there is sufficient air available for all divers to safely complete the dive Which of the following conditions may be life-threatening for a diver? (Arterial gas embolism [AGE], Decompression sickness [DCS], hypothermia) all of these How may the risks of hypothermia be reduced? By wearing an appropriate exposure suit of proper fit and thickness What are the signs and symptoms of hypothermia? Uncontrollable shivering and mental confusion How may the risks of Decompression Sickness (DCS) be reduced? By performing proper safety stops, using a conservative dive plan that does not push the decompression tables to the limit, and proper hydration What can lead to an increased risk of DCS? Consuming alcohol before or after a dive, diving at high altitudes, and exerting yourself physically after diving What are the signs and symptoms of DCS? Unusual fatigue and pain in the arms/legs/joints of the body When should you start clearing your ears? When you begin to feel pressure on your ears Arterial Gas Embolism (lung rupture) is mostly caused from a diver ascending to the surface without exhaling How may the risks of an Arterial Gas Embolism be reduced? Breathing normally during a dive, making sure not to ever hold your breath, ascending slowly at about 30 ft/min, and by never diving with lung congestion