BSAC SPORTS DIVER THEORY
QUESTIONS & ANSWERS(RATED A+)
When can a sports diver dive with an ocean diver or another sports diver? - ANSWERIn
conditions already encountered by the ocean diver during their training and under the
supervision of a dive manager.
What's the initial limited depth for a sports diver? - ANSWER20m
What's the progressively extended depth of a sports diver? - ANSWER35m
Is a neap tide small or large? - ANSWERSmall
Is a spring tide small or large? - ANSWERLarge
What causes a neap tide? - ANSWERWhen the Moon is at a right angle to Earth and
the Sun, creating the least amount of gravitational pull in one direction, creating weak
tides.
What causes spring tides? - ANSWERThe gravity of the sun and moon pull in the same
direction, creating strong tides.
Neap tides coincide with what? - ANSWERThe quarters of the moon
Spring tides coincide with what? - ANSWERNew and full moon
What's the average tide cycle in most places? - ANSWER12 hours
How many tide cycles in a day? - ANSWER2
How many high tides in a day? - ANSWER2
How many low tides are there in a day? - ANSWER2
How many times do spring tides occur in a lunar month? - ANSWER2
How many times do neap tides occur in a lunar month? - ANSWER2
What's the tidal range? - ANSWERHigh water - low water
What's slack water? - ANSWERAt the tides turning point, when the water speed is at its
slowest.
, What can make diving on a static site (e.g. a wreck) safer? - ANSWERDiving in slack
water
What is ground swell? - ANSWERWhen wind causing wave action on the surface can
be felt on the sea bed.
When is ground swell the roughest? - ANSWERWhen the surface winds go against the
tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? - ANSWERIncoming
What are five factors that can affect visibility? - ANSWER- bad weather
- tides
- being close to river estuaries
- lots of phytoplankton + zooplankton (most likely to be a problem in spring in most
places.)
-disturbance by divers.
What's a thermocline? - ANSWERSudden change in temperature, may look oily/ shiny
and produce a change in visibility
What can you do to reduce the effect of glare on the surface (as a boat crew member,
not a diver?) - ANSWER- wear polarised sunglasses
- position the boat with the sun behind you
What are four things you should take into account when doing a risk assessment? -
ANSWERConditions, depth, breathing gas and equipment
As neoprene wetsuits compress, there is a loss of what? - ANSWERThermal insulation
What precautions can you take to minimise the risk of a dive to yourself and your
buddy? - ANSWER-don't dive if you're unsure
- service equipment
- back up supply of gas
- pre agreed narcosis check (at agreed depth or gas level)
- practiced rescue skills
-
What are the four practised rescue skills you'll do as a sports diver? - ANSWERCBL/AS,
basic life support (BLS), rescue breathing (RB), chest compressions (CC)
What's the in water life support sequence? (6) - ANSWER- make bouyant
- shout for help
- extend airway
- give 1 minute RB's
- tow to shore or RB while waiting for boat
QUESTIONS & ANSWERS(RATED A+)
When can a sports diver dive with an ocean diver or another sports diver? - ANSWERIn
conditions already encountered by the ocean diver during their training and under the
supervision of a dive manager.
What's the initial limited depth for a sports diver? - ANSWER20m
What's the progressively extended depth of a sports diver? - ANSWER35m
Is a neap tide small or large? - ANSWERSmall
Is a spring tide small or large? - ANSWERLarge
What causes a neap tide? - ANSWERWhen the Moon is at a right angle to Earth and
the Sun, creating the least amount of gravitational pull in one direction, creating weak
tides.
What causes spring tides? - ANSWERThe gravity of the sun and moon pull in the same
direction, creating strong tides.
Neap tides coincide with what? - ANSWERThe quarters of the moon
Spring tides coincide with what? - ANSWERNew and full moon
What's the average tide cycle in most places? - ANSWER12 hours
How many tide cycles in a day? - ANSWER2
How many high tides in a day? - ANSWER2
How many low tides are there in a day? - ANSWER2
How many times do spring tides occur in a lunar month? - ANSWER2
How many times do neap tides occur in a lunar month? - ANSWER2
What's the tidal range? - ANSWERHigh water - low water
What's slack water? - ANSWERAt the tides turning point, when the water speed is at its
slowest.
, What can make diving on a static site (e.g. a wreck) safer? - ANSWERDiving in slack
water
What is ground swell? - ANSWERWhen wind causing wave action on the surface can
be felt on the sea bed.
When is ground swell the roughest? - ANSWERWhen the surface winds go against the
tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? - ANSWERIncoming
What are five factors that can affect visibility? - ANSWER- bad weather
- tides
- being close to river estuaries
- lots of phytoplankton + zooplankton (most likely to be a problem in spring in most
places.)
-disturbance by divers.
What's a thermocline? - ANSWERSudden change in temperature, may look oily/ shiny
and produce a change in visibility
What can you do to reduce the effect of glare on the surface (as a boat crew member,
not a diver?) - ANSWER- wear polarised sunglasses
- position the boat with the sun behind you
What are four things you should take into account when doing a risk assessment? -
ANSWERConditions, depth, breathing gas and equipment
As neoprene wetsuits compress, there is a loss of what? - ANSWERThermal insulation
What precautions can you take to minimise the risk of a dive to yourself and your
buddy? - ANSWER-don't dive if you're unsure
- service equipment
- back up supply of gas
- pre agreed narcosis check (at agreed depth or gas level)
- practiced rescue skills
-
What are the four practised rescue skills you'll do as a sports diver? - ANSWERCBL/AS,
basic life support (BLS), rescue breathing (RB), chest compressions (CC)
What's the in water life support sequence? (6) - ANSWER- make bouyant
- shout for help
- extend airway
- give 1 minute RB's
- tow to shore or RB while waiting for boat
