Divemaster Final Exam A Questions And
Answers Updated 2024/2025
True or False. Your understanding of the aquatic realm is important for assessing dive
conditions and emergency planning, as well as explaining to divers how they can interact
responsibly with the local environment. - answer✔True.
What is the ocean's major source of productivity and the base of the marine food chain?
a. Krill
b. Seagrass
c. Coral
d. Phytoplankton - answer✔d. Phytoplankton
True or False. Natural processes, such as earthquakes and storms, are much more of a severe
threat to coral reefs and wetlands than human-induced threats, such as pollution. -
answer✔False.
True or False. When an alien (invasive) species is introduced into an ecosystem, it may have no
natural enemies, which allows it to quickly multiply and possibly overtake and kill off native
species. - answer✔True.
A _______________ exists when relatively warm, low-density surface water is separated from
cool, high-density deep water.
d. rip current - answer✔d. thermocline
If you stand on a beach and watch water generally moving down the coast, pushed by waves
approaching the shore at an angle and assisted by the prevailing wind, you are looking at a
_______ current.
a. rip
b. tidal
c. longshore
d. upwelling - answer✔c. longshore
A day after strong winds drive surface waters offshore, you notice that water conditions
become clear and cool. This is likely due to:
ALL RIGHTS RESERVED.
Gravitational interaction between the sun, moon and earth cause ______, while wind is the
most common disturbing force that causes ___________.
a. tides / waves
b. surge / currents
c. rip currents / ocean swells.
d. waves / tides - answer✔a. tides / waves.
True or False. As a wave moves toward shore, its energy is affected by the bottom causing the
wave height to rise, eventually becoming unstable and spilling its energy as surf. -
answer✔True.
Ways that you can encourage divers to protect the underwater world include:
a. be a role model for others divers, dive carefully and be aware of equipment placement when
diving.
b. respect underwater cultural heritage and maritime history.
c. report environmental disturbances or destruction and get involved in local environmental
activities and issues.
d. All of the above. - answer✔d. All of the above.
While outside, at a very cold temperature, you fill a balloon with air. What will happen when
you take the balloon inside and place it near a heater?
a. The density in the balloon will remain unchanged.
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