Objects underwater appear Study guides, Class notes & Summaries

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 temperat...

SSI Open Water Exam With Correct Solutions 2024 Which of the statements concerning sound transmission underwater is incorrect? -Sound will travel farther underwater then in air -Divers find it difficult to locate the direction of a sound producing source -Divers find it easy to talk to each other directly through water -Sound travels four times faster underwater than in air - correct answer.-Divers find it easy to talk to each other directly through water The absolu...

Objects under water appear: 1: The same size as they do on land. 2: Twice as large as they do on land. 3: Closer and larger than they do on land. 4: Smaller and farther away than they do on land. - Closer and larger than they do on land. As you descend: 1: Colors appear to fade. 2: Reds and oranges are among the first colors to disappear. 3: At 30 m/99 ft, little color remains other than blues, grays, blacks and whites. 4: All of the above. - All of the above. Which of the following st...

PADI Open Water Diver Final Exam with 100% Correct Answers 2023 As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep as - Correct Answer-18 metres/60 feet As you descend in water, the pressure - Correct Answer-increases A depth change of 10 metres/33 feet causes a pressure change of - Correct Answer-1 bar/ata (atmosphere) if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be - Correct Answer-2 litres (the density of the ...

If you experience pain in the ear during descent: A - Place a finger in the ear canal and gently massage the ear until the pain ceases B - Stop the descent and ascend until the pain stops C - Continue the descent while gently exhaling into the mask D - Abort the dive - Answer- B - Stop the descent and ascend until the pain stops Earplugs: A - Protect against cold B - Protect the ears from squeeze C - Aid equalization of the middle ear D - Should never be worn while div...

SSI Open Water Diver Exam Questions and Answers All Correct One atmosphere of pressure is defined as: a) Each 34 feet of depth in freshwater b) each 33 ft. of depth in saltwater c) 1 ata d) All answers are correct. - ANSWER All answers are correct The absolute pressure expressed in terms of atmospheres absolute at 33 ft. in sea water is: a) 1 ata b) 3 ata c) 2 ata d) 4 ata - ANSWER 2 ata Underwater, the bending of light rays causes objects ...

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 ...

How big do Objects underwater appear Objects appear 33% larger underwater. How far away do objects appear underwater? Objects appear 25% closer. How much faster does sound travel in water, compared to air? 4 times How fast does Water conduct heat away from your body 25 times faster than air does As you descend what happens to colors and which colors? colors fade, reds and oranges fade first, 30 meters seem blue and gray At what water te

Describing diving with the acronym SCUBA came from what event? The development of the demand regulator in 1943. Earplugs: Should never be worn while diving. If a flexible air-filled container has a volume of 40 cu ft on the surface, what would the volume be at 99 feet in sea water? (rounded off) 10 cu Absolute pressure is defined as: The total pressure exerted on an object. The greatest relative pressure change in sea water takes place between ____ and ____ feet. ...

At an altitude of about 16,000 feet, the atmospheric pressure is approximately: 1/18th the atmospheric pressure at sea level Equal to the atmospheric pressure at sea level Twice the atmospheric pressure at sea level One-half the atmospheric pressure at sea level - Answer- One-half the atmospheric pressure at sea level If the volume of a gas is kept constant, what varies directly with temperature? The pressure All answers are correct The mixing The volume - Answer- The pressure Our ...