BSAC Ocean Diver theory module -
Adapting to the underwater world Exam
What causes atmospheric pressure at sea level? - -The weight of (mass) of
air which makes up the atmosphere
-What is atmospheric pressure in a) Bar and b) Kg/cm2? - -1 bar or 1
kilogram per square cm (1kg/cm2)
-What is the absolute pressure in bar at 40m? - -5 bar
-What happens to a volume of gas in an inverted bucket when taken from
the surface to 10m? - -Its volumed is halved
-What glass should be used in the construction of a face mask? - -Tempered
glass
-What maintenance is required immediately after using diving equipment? - -
It should be washed in fresh water
-Air pressure within the body must be kept equal to what, if injury is to be
avoided? - -Ambient (surrounding) water pressure
-What are the three main items of SCUBA equipment? - -Cylinder, Regulator
and Buoyancy Compensator
-What are the test requirements of a cylinder in the UK? - -Visual inspection
every two and a half years and hydraulic test every 5 years. Cylinders for
nitro need to be cleaned and certified periodically.
-What is the generic name for breathing gas mixtures containing more than
22% oxygen? - -Nitrox
-
Adapting to the underwater world Exam
What causes atmospheric pressure at sea level? - -The weight of (mass) of
air which makes up the atmosphere
-What is atmospheric pressure in a) Bar and b) Kg/cm2? - -1 bar or 1
kilogram per square cm (1kg/cm2)
-What is the absolute pressure in bar at 40m? - -5 bar
-What happens to a volume of gas in an inverted bucket when taken from
the surface to 10m? - -Its volumed is halved
-What glass should be used in the construction of a face mask? - -Tempered
glass
-What maintenance is required immediately after using diving equipment? - -
It should be washed in fresh water
-Air pressure within the body must be kept equal to what, if injury is to be
avoided? - -Ambient (surrounding) water pressure
-What are the three main items of SCUBA equipment? - -Cylinder, Regulator
and Buoyancy Compensator
-What are the test requirements of a cylinder in the UK? - -Visual inspection
every two and a half years and hydraulic test every 5 years. Cylinders for
nitro need to be cleaned and certified periodically.
-What is the generic name for breathing gas mixtures containing more than
22% oxygen? - -Nitrox
-
