Podcast
Questions and Answers
What is the characteristic of the sediments in the profundal zone?
What is the characteristic of the sediments in the profundal zone?
- Coarse particles lacking a benthic macroflora
- Fine particles largely made up of material produced within the lake (correct)
- Dark colored sediments with abundant benthic macroflora
- Light particles with high organic matter production
Why do old shells of gastropods and pelecypods accumulate in the sublittoral zone?
Why do old shells of gastropods and pelecypods accumulate in the sublittoral zone?
- Due to the high oxygen levels in the sublittoral zone
- Because they prefer the warmer temperatures in the sublittoral zone
- Because the sublittoral zone serves as a cemetery for some littoral species (correct)
- Because they are actively transported from the littoral zone
What effect can onshore winds have on coastal operations?
What effect can onshore winds have on coastal operations?
- Extend 5 to 10 nautical miles offshore at speeds of 4 to 6 knots
- Cause wind shear, heavy rain, hail, and high winds
- Create taller waves and lift moist sea air over coastal hills (correct)
- Reduce visibility and carry smoke, fog, and dust offshore
What does the benthos in a lake reveal about the conditions in the hypolimnetic water?
What does the benthos in a lake reveal about the conditions in the hypolimnetic water?
What is a common danger associated with terrain-forced thunderstorms?
What is a common danger associated with terrain-forced thunderstorms?
What geological feature is formed at a spreading center where two plates are drifting apart?
What geological feature is formed at a spreading center where two plates are drifting apart?
What kind of volcanic feature is likely to form over hot spots in the ocean floor?
What kind of volcanic feature is likely to form over hot spots in the ocean floor?
At what rate are the plates spreading at the mid-ocean ridge, leading to new oceanic crust formation?
At what rate are the plates spreading at the mid-ocean ridge, leading to new oceanic crust formation?
What geological feature is formed when the peak of a seamount erodes and becomes a flat surface?
What geological feature is formed when the peak of a seamount erodes and becomes a flat surface?
What type of feature is likely to form when the peak of a seamount pierces the ocean surface?
What type of feature is likely to form when the peak of a seamount pierces the ocean surface?
What is the main concern for boats, submarines, swimmers, and torpedoes approaching shipwrecks?
What is the main concern for boats, submarines, swimmers, and torpedoes approaching shipwrecks?
How does the presence of bioluminescent organisms affect the visibility of a ship's wake?
How does the presence of bioluminescent organisms affect the visibility of a ship's wake?
Which factor can disturb the depth of the thermocline in the water?
Which factor can disturb the depth of the thermocline in the water?
What characteristic differentiates the marine life in littoral areas from that in near-surface open ocean?
What characteristic differentiates the marine life in littoral areas from that in near-surface open ocean?
Which of the following can cause coastal currents to change rapidly, rendering current charts ineffective?
Which of the following can cause coastal currents to change rapidly, rendering current charts ineffective?
What type of animals thrive in the continental shelf regions?
What type of animals thrive in the continental shelf regions?
Which zone begins at the continental shelf break and is usually up to 20 km wide?
Which zone begins at the continental shelf break and is usually up to 20 km wide?
What is the primary source of nourishment for microscopic plants and animals in the ocean?
What is the primary source of nourishment for microscopic plants and animals in the ocean?
Which of the following is NOT a characteristic of land-fast ice?
Which of the following is NOT a characteristic of land-fast ice?
Where do lake benthos typically reside?
Where do lake benthos typically reside?
How does wind shear affect Navy operations?
How does wind shear affect Navy operations?
What happens when a river meets the ocean in terms of water density?
What happens when a river meets the ocean in terms of water density?
How can reefs, bars, and channels impact the underwater environment?
How can reefs, bars, and channels impact the underwater environment?
What is a potential danger associated with winds creating high waves at sea?
What is a potential danger associated with winds creating high waves at sea?
How do differences in wind patterns above and around mountains affect the Navy's operations?
How do differences in wind patterns above and around mountains affect the Navy's operations?
