BSAC sports diver theory || Acknowledged Answers 100%.
When can a sports diver dive with an ocean diver or another sports diver? correct answers In
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? correct answers 20m
What's the progressively extended depth of a sports diver? correct answers 35m
Is a neap tide small or large? correct answers Small
Is a spring tide small or large? correct answers Large
What causes a neap tide? correct answers When 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? correct answers The gravity of the sun and moon pull in the same
direction, creating strong tides.
Neap tides coincide with what? correct answers The quarters of the moon
Spring tides coincide with what? correct answers New and full moon
What's the average tide cycle in most places? correct answers 12 hours
How many tide cycles in a day? correct answers 2
,How many high tides in a day? correct answers 2
How many low tides are there in a day? correct answers 2
How many times do spring tides occur in a lunar month? correct answers 2
How many times do neap tides occur in a lunar month? correct answers 2
What's the tidal range? correct answers High water - low water
What's slack water? correct answers At 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? correct answers Diving in slack water
What is ground swell? correct answers When wind causing wave action on the surface can be felt
on the sea bed.
When is ground swell the roughest? correct answers When the surface winds go against the
tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? correct answers Incoming
What are five factors that can affect visibility? correct answers - 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? correct answers Sudden 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?) correct answers - 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? correct
answers Conditions, depth, breathing gas and equipment
As neoprene wetsuits compress, there is a loss of what? correct answers Thermal insulation
What precautions can you take to minimise the risk of a dive to yourself and your buddy? correct
answers -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? correct answers CBL/AS,
basic life support (BLS), rescue breathing (RB), chest compressions (CC)
What's the in water life support sequence? (6) correct answers - make bouyant
- shout for help
- extend airway
- give 1 minute RB's
- tow to shore or RB while waiting for boat
When can a sports diver dive with an ocean diver or another sports diver? correct answers In
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? correct answers 20m
What's the progressively extended depth of a sports diver? correct answers 35m
Is a neap tide small or large? correct answers Small
Is a spring tide small or large? correct answers Large
What causes a neap tide? correct answers When 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? correct answers The gravity of the sun and moon pull in the same
direction, creating strong tides.
Neap tides coincide with what? correct answers The quarters of the moon
Spring tides coincide with what? correct answers New and full moon
What's the average tide cycle in most places? correct answers 12 hours
How many tide cycles in a day? correct answers 2
,How many high tides in a day? correct answers 2
How many low tides are there in a day? correct answers 2
How many times do spring tides occur in a lunar month? correct answers 2
How many times do neap tides occur in a lunar month? correct answers 2
What's the tidal range? correct answers High water - low water
What's slack water? correct answers At 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? correct answers Diving in slack water
What is ground swell? correct answers When wind causing wave action on the surface can be felt
on the sea bed.
When is ground swell the roughest? correct answers When the surface winds go against the
tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? correct answers Incoming
What are five factors that can affect visibility? correct answers - 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? correct answers Sudden 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?) correct answers - 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? correct
answers Conditions, depth, breathing gas and equipment
As neoprene wetsuits compress, there is a loss of what? correct answers Thermal insulation
What precautions can you take to minimise the risk of a dive to yourself and your buddy? correct
answers -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? correct answers CBL/AS,
basic life support (BLS), rescue breathing (RB), chest compressions (CC)
What's the in water life support sequence? (6) correct answers - make bouyant
- shout for help
- extend airway
- give 1 minute RB's
- tow to shore or RB while waiting for boat
