SDI CERTIFICATION EXAM ( ACTUAL EXAM )
WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (68)
What does SCUBA stand for? Self
Contained
Underwater
Breathing
Apparatus
List the three important scuba diving 1) Dive tables published for repetitive dives
changes that occurred in the 1950s 2) Improved design/quality of scuba gear
3) Dive computers commercially available
Name three different devices that Depth gauge, dive tables, watch
modern dive computers replace
, What sets SDI apart from other Students use a personal dive computer for all
training agencies? instruction and certification dives
How much larger and closer do 33% larger, 25% closer
objects appear under water and why? Light bends in the air-space between the lens and
your eyes.
How much faster does sound move 4 times faster in water
through water than air and why? Water is 800x denser than air; sound travels through
denser mediums at faster rates
What is the first color absorbed RED (followed by OYGBIV)
underwater?
When diving from shore, the best Slack
time to dive is when there is the least
amount of tidal current. _____ tide is
when there is no horizontal water
movement.
If you are caught in a rip current, first Perpendicular
swim _____ to the current to get out of
it before swimming towards shore.
Start your dive by swimming ____ the into/against
current
Global currents are _____. Fixed
Local currents ____. Fluctuate
Rip current Current which goes seaward due to ocean floor
stuctures
WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (68)
What does SCUBA stand for? Self
Contained
Underwater
Breathing
Apparatus
List the three important scuba diving 1) Dive tables published for repetitive dives
changes that occurred in the 1950s 2) Improved design/quality of scuba gear
3) Dive computers commercially available
Name three different devices that Depth gauge, dive tables, watch
modern dive computers replace
, What sets SDI apart from other Students use a personal dive computer for all
training agencies? instruction and certification dives
How much larger and closer do 33% larger, 25% closer
objects appear under water and why? Light bends in the air-space between the lens and
your eyes.
How much faster does sound move 4 times faster in water
through water than air and why? Water is 800x denser than air; sound travels through
denser mediums at faster rates
What is the first color absorbed RED (followed by OYGBIV)
underwater?
When diving from shore, the best Slack
time to dive is when there is the least
amount of tidal current. _____ tide is
when there is no horizontal water
movement.
If you are caught in a rip current, first Perpendicular
swim _____ to the current to get out of
it before swimming towards shore.
Start your dive by swimming ____ the into/against
current
Global currents are _____. Fixed
Local currents ____. Fluctuate
Rip current Current which goes seaward due to ocean floor
stuctures
