Underwater Study guides, Revision notes & Summaries

When recess is called, two boys slip on their hoodies and, with a little concentration, zip them up. They then run out to the playground, where they draw stick figures with sidewalk chalk. Which physical development stage describes these students? Middle childhood Infancy Early childhood Adolescence CORRECT ANSWERS: Early Childhood True or False A second-grade student tells his teacher that he is being bullied on the playground by some older children. The student is attempting to me...

Underwater welding and cutting Exam Latest Update...

There are six conductors in a race way connected to 75° C rated circuit breaker. Each wire has a 70 amp load using THHM conductors. The minimum size conductors used our #_________AWG correct answer: 4 Thermal insulation shall not be installed within _________inches of recessed lighting fixtures correct answer: 3 A 1 inch conduit contains three wire circuits or a phase system. All conductors are number 10 TW. Each circuit consist of two phase conductors and one grounding conductor and on...

Earplugs A-Aid equalization of the middle of the ear B- Protect against cold C-Should never be worn while diving D-Protect ears from squeeze - Answer- C The first symptom of a sinus squeeze is usually: A- a dull pain deep within the head B- a sharp pain at the base of the neck C- a crushing pain high in the chest D- a sharp pain above the eyes - Answer- D One atmosphere of pressure is defined as: A-Each 34 ft of depth in freshwater B-Each 33 ft of depth in seawater C-1 ata ...

SCUBA - Answer- Self contained underwater breathing apparatus What is the pressure change for each 10m/33ft of depth change? - Answer- 1 bar/1 ata/1 atmosphere What is the relationship between my depth in water and the pressure? - Answer- The deeper you go in water, the more the pressure increases Pressure is expressed as the weight of air What is the relationship between pressure, and the volume and the density of air? - Answer- As pressure increases, the gas volume decreases and the ...

SCUBA correct answersSelf contained underwater breathing apparatus What is the pressure change for each 10m/33ft of depth change? correct answers1 bar/1 ata/1 atmosphere What is the relationship between my depth in water and the pressure? correct answersThe deeper you go in water, the more the pressure increases Pressure is expressed as the weight of air What is the relationship between pressure, and the volume and the density of air? correct answersAs pressure increases, the gas volum...

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...

ADC: International Consensus Standards For Commercial Diving And Underwater Operations Edition 6.2 – Q&A

Ultimate risk in scuba diving is __________ or __________ - injuries / death A student enrolled for training in scuba diving has an obligation to __________, __________, and __________ every course session. - attend, participate, and complete Your entry-level NAUI Scuba Diver certification is a "license to __________." - learn about underwater world The best way to stay fit for diving is to __________. - dive regularly You should not consume __________ for at least 12 hours before diving...

Which of the statements concerning sound transmission underwater is incorrect? -A: Sound will travel farther underwater then in air -B: Divers find it difficult to locate the direction of a sound producing source -C: Divers find it easy to talk to each other directly through water -D: Sound travels four times faster underwater than in air -Answer- C The absolute pressure expressed in terms of atmospheres absolute at 33 feet in sea water is: -A: 2 ata -B:1 ata -C: 4 ata -D: 3 ata -Answe...