BSAC sports diver theory UPDATED ACTUAL Questions and CORRECT
Answers
When can a sports diver dive with an ocean diver or In conditions already encountered by the ocean diver during their training and
another sports diver? under the supervision of a dive manager.
What's the initial limited depth for a sports diver? 20m
What's the progressively extended depth of a sports 35m
diver?
Is a neap tide small or large? Small
Is a spring tide small or large? Large
What causes a neap tide? 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? The gravity of the sun and moon pull in the same direction, creating strong tides.
Neap tides coincide with what? The quarters of the moon
Spring tides coincide with what? New and full moon
What's the average tide cycle in most places? 12 hours
How many tide cycles in a day? 2
How many high tides in a day? 2
, How many low tides are there in a day? 2
How many times do spring tides occur in a lunar month? 2
How many times do neap tides occur in a lunar month? 2
What's the tidal range? High water - low water
What's slack water? 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? Diving in slack water
What is ground swell? When wind causing WAVE ACTION on the surface can be felt on the sea bed.
When is ground swell the roughest? When the surface winds go against the tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? Incoming
What are five factors that can affect visibility? - 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.
Differing diving conditions? - temperature/climate
- tides/currents
- salinity (will effect buoyancy)
- depth
What's a thermocline? 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 - wear polarised sunglasses
surface (as a boat crew member, not a diver?) - position the boat with the sun behind you
What are four things you should take into account when Conditions, depth, breathing gas and equipment
doing a risk assessment?
As neoprene wetsuits compress, there is a loss of what? Thermal insulation
What precautions can you take to minimise the risk of a -don't dive if you're unsure
dive to yourself and your buddy? - 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 CBL/AS, basic life support (BLS), rescue breathing (RB), chest compressions (CC)
sports diver?
Answers
When can a sports diver dive with an ocean diver or In conditions already encountered by the ocean diver during their training and
another sports diver? under the supervision of a dive manager.
What's the initial limited depth for a sports diver? 20m
What's the progressively extended depth of a sports 35m
diver?
Is a neap tide small or large? Small
Is a spring tide small or large? Large
What causes a neap tide? 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? The gravity of the sun and moon pull in the same direction, creating strong tides.
Neap tides coincide with what? The quarters of the moon
Spring tides coincide with what? New and full moon
What's the average tide cycle in most places? 12 hours
How many tide cycles in a day? 2
How many high tides in a day? 2
, How many low tides are there in a day? 2
How many times do spring tides occur in a lunar month? 2
How many times do neap tides occur in a lunar month? 2
What's the tidal range? High water - low water
What's slack water? 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? Diving in slack water
What is ground swell? When wind causing WAVE ACTION on the surface can be felt on the sea bed.
When is ground swell the roughest? When the surface winds go against the tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? Incoming
What are five factors that can affect visibility? - 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.
Differing diving conditions? - temperature/climate
- tides/currents
- salinity (will effect buoyancy)
- depth
What's a thermocline? 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 - wear polarised sunglasses
surface (as a boat crew member, not a diver?) - position the boat with the sun behind you
What are four things you should take into account when Conditions, depth, breathing gas and equipment
doing a risk assessment?
As neoprene wetsuits compress, there is a loss of what? Thermal insulation
What precautions can you take to minimise the risk of a -don't dive if you're unsure
dive to yourself and your buddy? - 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 CBL/AS, basic life support (BLS), rescue breathing (RB), chest compressions (CC)
sports diver?
