SDI Open Water Scuba Diver Exam Questions with Detailed Verified Answers (100% Correct Answers) /Already Graded A+

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