Questions And Complete Answers From Sdi Quizzes Study Guide Rated A+

The key to using air efficiently while breathing from scuba is to: {Ans: Breathe slowly and deeply.}You can help prevent seasickness by: {Ans: Staring at the horizon. Avoiding diesel fumes and other strong odors.}How much faster does sound travel in water, compared to air? {Ans: four times as fast}Holding your breath while ascending can lead to: {Ans: a rupture of the tiny air sacks in the lungs, known as alveoli. A lung overpressure (overexpansion) injury. Arterial gas embolism (AGE).}Among the best ways to prevent decompression sickness (DCS): {Ans: remain well within your dive computer's no-decompression limit. Ascend no faster than the rate allowed by the dive computer. Make a safety stop of between three and five minutes at a depth of 3-6 m/10-20 ft.}T/F: Contact lens wearers should not close their eyes when clearing a mask. {Ans: false}