Oceans Flashcards

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1
Q

How are ocean layers separated?

A

Depends on available sunlight (Sunlight Zone, Twilight Zone, Midnight) & temperature (Surface, Thermocline, and Deep Ocean)

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2
Q

Sunlight Zone

A

-Also known as the Epipelagic Zone
-Warmed by heat of Sun
-Adaptions: Countershading, small size, and coloradaptations

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3
Q

Twilight Zone

A

-Also known as the Disphotic Zone
-Greek for “poorly lit”
-The depth of this zone is around 200m-1000m
-Adaptations: Bioluminescence, very large teeth, and expandable stomachs

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4
Q

Midnight Zone

A

-Includes both bathypelagic and abyssopelagic zone
-Depth range from 1000 to the ocean floor
-Temperatures continue to decline with depth as you go deeper
-Adaptations: Very slow metabolic rates, dark colored to blend in, and eat “marine snow”: Pressure effects of animals in the ocean

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5
Q

Water Pressure

A

-Functions like atmospheric pressure
-At the bottom of the ocean, there is physically more water pressing down
-Water weighs 800x more than air
-Pressure increases about one atmosphere for every 10 meters of water depth

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