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Scuba Chapter 4 Questions and Answers
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Scuba Chapter 4 Questions and Answers
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Scuba Chapter 4 Questions and AnswersDescribe two important features of a weight system.* - ANSWER-1. To weigh you down
2. You can use different weights
A properly weighted scuba diver should float at _____________ when her BCD is
deflated and lungs are fully inflated. - ANSWER-eye level
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 right. Screw the knob on your first stage until it is finger tight.
Connect the low pressure inflator hose to the stem on the BCD's inflator. Turn on the
air.
Describe from the start to finish the steps to disassemble your scuba system. -
ANSWER-1. Remove accessories and weights
2. Decompress the system: Turn the valve knob completely clockwise. Decompress one
of the second gauges (purge button or the auto inflator button to vent air remaining in
the hoses)
3. Detach the LP hose from the inflator assembly by pulling the collar back on the quick
disconnect. Unscrew the yoke knob until the first stage can slip off the top of the valve.
4. Undo the straps and remove the BCD from the cylinder.
5. Rinse off gear and fill and dump BCD
Describe how to perform a giant stride entry off a boat. - ANSWER-Stand on the edge
of the dive platform, check the water below to make sure it is clear of other divers, put
your right hand over your mask and regulator and your left hand over your weight belt
buckle, stand straight, look directly ahead and take a big step out off the edge of the
platform. Signal OK if everything is alright.
Describe the two emergency out-of-air ascents. - ANSWER-1. Signal out of air
2. Remove regulator, exhale, reach for your buddy's alternate air source.
3. Put in your mouth, purge and breath exchanging "OK" and "Go up" hand signals.
4. Donor should hold onto the receiver's BCD shoulder strap as you slowly ascend
together.
5. Orally inflate your BCD when you reach the surface.
1. Signal out of air
2. Donor grabs buddy, takes a breath, and gives buddy regulator.
3. Receiver purges and takes 2 breaths and passes it back.
4. Donor keeps hand on the hose and they both go up repeating steps 2-3.
Describe two different ways to indicate "OK". - ANSWER-1. Pointer thumb touch
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