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Divemaster Final Exam A part 2 Questions and Answers 2024.
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Divemaster Final Exam A part 2 Questions and Answers 2024.
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Divemaster Final Exam A part 2 Questions and Answers 20241. 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: d. Phytoplankton
2. 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.: False.
3. True or False. When an alien (invasive) species is introduced into an ecosys-
tem, it may have no natural enemies, which allows it to quickly multiply and
possibly overtake and kill off native species.: True.
4. A exists when relatively warm, low-density surface water
is separated from cool, high-density deep water.
a. freshwater layer
b. thermocline
c. downwelling
d. rip current: d. thermocline
5. 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: c. longshore
6. A day after strong winds drive surface waters offshore, you notice that water
conditions become clear and cool. This is likely due to:
, a. downwelling
b. extreme tides.
c. a longshore current.
d. upwelling: d. upweling
7. 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: a. tides / waves.
8. 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.: True.
9. Ways that you can encourage divers to protect the underwater world in-
clude:
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.: d. All of the above.
10. 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.
b. The volume of the balloon will decrease.
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