BSAC SPORTS DIVER THEORY EXAM
QUESTIONS & CORRECT ANSWERS
When can a sports diver dive with an ocean diver or another sports diver? -
ANSWER .- 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? - ANSWER .- 20m What's
the progressively extended depth of a sports diver? - ANSWER
.- 35m
Is a neap tide small or large? - ANSWER .- Small
Is a spring tide small or large? - ANSWER .- Large
What causes a neap tide? - ANSWER .- 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? - ANSWER .- The gravity of the sun and moon pull
in the same direction, creating strong tides.
Neap tides coincide with what? - ANSWER .- The quarters of the moon
,Spring tides coincide with what? - ANSWER .- New and full moon
What's the average tide cycle in most places? - ANSWER .- 12 hours
How many tide cycles in a day? - ANSWER .- 2
How many high tides in a day? - ANSWER .- 2
How many low tides are there in a day? - ANSWER .- 2
How many times do spring tides occur in a lunar month? - ANSWER
.- 2
How many times do neap tides occur in a lunar month? - ANSWER
.- 2
What's the tidal range? - ANSWER .- High water - low water
What's slack water? - ANSWER .- 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? - ANSWER
.- Diving in slack water
What is ground swell? - ANSWER .- When wind causing wave action on the
surface can be felt on the sea bed.
, When is ground swell the roughest? - ANSWER .- When the surface winds go
against the tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? - ANSWER .- Incoming
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? - ANSWER .- 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?) - 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? - ANSWER .- Conditions, depth, breathing gas and equipment
As neoprene wetsuits compress, there is a loss of what? - ANSWER
.- Thermal insulation
What Precautions Can You Take To Minimise The Risk Of A Dive To Yourself
QUESTIONS & CORRECT ANSWERS
When can a sports diver dive with an ocean diver or another sports diver? -
ANSWER .- 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? - ANSWER .- 20m What's
the progressively extended depth of a sports diver? - ANSWER
.- 35m
Is a neap tide small or large? - ANSWER .- Small
Is a spring tide small or large? - ANSWER .- Large
What causes a neap tide? - ANSWER .- 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? - ANSWER .- The gravity of the sun and moon pull
in the same direction, creating strong tides.
Neap tides coincide with what? - ANSWER .- The quarters of the moon
,Spring tides coincide with what? - ANSWER .- New and full moon
What's the average tide cycle in most places? - ANSWER .- 12 hours
How many tide cycles in a day? - ANSWER .- 2
How many high tides in a day? - ANSWER .- 2
How many low tides are there in a day? - ANSWER .- 2
How many times do spring tides occur in a lunar month? - ANSWER
.- 2
How many times do neap tides occur in a lunar month? - ANSWER
.- 2
What's the tidal range? - ANSWER .- High water - low water
What's slack water? - ANSWER .- 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? - ANSWER
.- Diving in slack water
What is ground swell? - ANSWER .- When wind causing wave action on the
surface can be felt on the sea bed.
, When is ground swell the roughest? - ANSWER .- When the surface winds go
against the tide/stream/current flow.
Is an incoming or outgoing tide better for visibility? - ANSWER .- Incoming
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? - ANSWER .- 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?) - 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? - ANSWER .- Conditions, depth, breathing gas and equipment
As neoprene wetsuits compress, there is a loss of what? - ANSWER
.- Thermal insulation
What Precautions Can You Take To Minimise The Risk Of A Dive To Yourself
