Page 1 of 58
BSAC SPORTS DIVER THEORY 190 QUESTIONS &
ANSWERS WITH GUARANTEED PASS!!
Elected commitee ......ANSWER........Diving officer
Training officer
Chairperson
Treasurer
Secretary
Equipment officer
Ocean diver aim ......ANSWER........Dive to 20m with a dive
manager. Able to use 32-36 nitrox on air tables
Discovery diver aim ......ANSWER........12m depth under direct in
water supervision of a dive leader
BSAC council ......ANSWER........committee that manages bsac on
behalf of the members
For every 10m ......ANSWER........A water column with area 1 cm
squared exerts a downwards pressure of one bar
Atmospheric pressure ......ANSWER........Is always 1 bar
How to measure water pressure ......ANSWER........Depth gauges,
given in metres
10m the air volume is ......ANSWER........2 bar pressure
20m the air volume is ......ANSWER........3 bar pressure
30m the air volume is ......ANSWER........4 bar pressure
,Page 2 of 58
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
,Page 3 of 58
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
, Page 4 of 58
- 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 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? ......ANSWER........CBL/AS, basic life support (BLS), rescue
breathing (RB), chest compressions (CC)
BSAC SPORTS DIVER THEORY 190 QUESTIONS &
ANSWERS WITH GUARANTEED PASS!!
Elected commitee ......ANSWER........Diving officer
Training officer
Chairperson
Treasurer
Secretary
Equipment officer
Ocean diver aim ......ANSWER........Dive to 20m with a dive
manager. Able to use 32-36 nitrox on air tables
Discovery diver aim ......ANSWER........12m depth under direct in
water supervision of a dive leader
BSAC council ......ANSWER........committee that manages bsac on
behalf of the members
For every 10m ......ANSWER........A water column with area 1 cm
squared exerts a downwards pressure of one bar
Atmospheric pressure ......ANSWER........Is always 1 bar
How to measure water pressure ......ANSWER........Depth gauges,
given in metres
10m the air volume is ......ANSWER........2 bar pressure
20m the air volume is ......ANSWER........3 bar pressure
30m the air volume is ......ANSWER........4 bar pressure
,Page 2 of 58
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
,Page 3 of 58
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
, Page 4 of 58
- 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 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? ......ANSWER........CBL/AS, basic life support (BLS), rescue
breathing (RB), chest compressions (CC)
