Sdi open water Study guides, Class notes & Summaries

SDI OPEN WATER (CH 3- SCUBA EQUIPMENT) EXAM 2024 What is the main purpose of a snorkel? - correct answer It's used when a long swim on the surface is required in order to conserve air in the tanks. How do you know if a mask fits correctly? - correct answer 1. Press the mask against your face without using the strap 2. Make sure there's no hair under the skirt of the mask 3. Inhale slightly 4. If the mask tightens against your face and doesn't fall off it's a good fit. Name at leas...

What is the absolute pressure (in atm) at 66 feet? - Answer- 2 atm What will be the volume in a ball that is filled with two cubic feet of air at 99 feet when it's taken to the surface? - Answer- 8 cubic feet How many more times dense is the air in a balloon at 4 atm compared to the air density at the surface? - Answer- 4 X as dense What is the abbreviation for an atmosphere? - Answer- atm If a scuba cylindar lasts 2 hours (120 minutes) at sea level, how long will it last at 66 feet...

SDI Open Water Exam Questions And Answers With Complete Solutions

SDI OPEN WATER (CH 1- THE UNDERWATER ENVIRONMENT) EXAM 2024 What does SCUBA stand for? - correct answer Self Contained Underwater Breathing Aparatus List 3 important scuba diving changes that occurred in the 1950's. - correct answer 1. US Navy Dive tables published in 1957 2. First personal dive computer invented in 1959 3. Dramatic improvements in personal diving equipment What sets SDI (Scuba Diving International) apart from other diving training agencies? - correct answer Th...

SDI Open Water Questions with complete solution Describe all the steps to assemble a BCD and regulator to a scuba cylinder. - answer-Spin the tank around so that the back of the valve is facing you. Place the BCD band(s) over the top of the cylinder so that the back of the BCD is facing you. Raise or lower the BCD so the top is even with the cylinder valve. Fasten the buckles. Remove dust cap, hold first stage in left hand, rotate the chambers until the primary second stage sits on the ri...

SDI Open Water Scuba Diver Exam questions and answers .

SDI Open Water Scuba Diver Exam Questions and answers 2024 Objects under water appear - ANSWER-Closer and larger than they do on land How much faster does sound travel in water, compared to air? - ANSWER-4 times Water conducts heat away from your body - ANSWER-25 times faster than air does As you descend - ANSWER-colors fade, reds and oranges fade first, 30 meters seem blue and gray water temp does your body need thermal protection - ANSWER-86 degrees What does SCUBA mean - ANSWER-self-c...

SDI Open Water Set questions and answers

What is the absolute pressure (in atm) at 66 feet? 2 atm What will be the volume in a ball that is filled with two cubic feet of air at 99 feet when it's taken to the surface? 8 cubic feet How many more times dense is the air in a balloon at 4 atm compared to the air density at the surface? 4 X as dense What is the abbreviation for an atmosphere? atm If a scuba cylindar lasts 2 hours (120 minutes) at sea level, how long will it last at 66 feet? 40 minutes ...

SDI Open Water Scuba Diver Exam