SDI Open Water Scuba Diver Exam 2023/2024 with complete solutions

Objects under water appear Closer and larger than they do on land How much faster does sound travel in water, compared to air? 4 times Water conducts heat away from your body 25 times faster than air does As you descend colors fade, reds and oranges fade first, 30 meters seem blue and gray water temp does your body need thermal protection 86 degrees What does SCUBA mean self-contained underwater breathing apparatus When water stratifies itself into layers, according to temperature, the boundary between layers is known as a(n): 1: Halocline. 2: Ichtyocline. 3: Thermodyne. 4: Thermocline. Thermocline What is the primary cause of waves? wind Which of the following factors do we take into account when measuring waves? Height, Length Which of the following is incorrect? Waves are not hazardous to divers during shore dives The consequences of becoming cold under water include the following except improved judgment and coordination Because sound travels faster under water: Its harder to determine the direction from which a sound is coming Entering through surf requires special skills. These skills are often included in beginning scuba course taught in areas in which surf entries are common true which of the following are true Surge is the back-and-forth movement of water caused by passing over head Which of the following are true The sun warming water near the equator, coupled with the earth's rotation, is the primary cause of permanent ocean currents despite its apparent warmth, divers in warm waters still need to consider to wear protection true