Vertical Structure of the Oceans (Leaving Cert Geography): Flashcards
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Practise the cards
13 cards from this deck
4 factors creating ocean stratification
4 factors creating ocean stratification
Density, pressure, salinity, temperature
What drives thermohaline circulation
What drives thermohaline circulation
Density differences
Thermocline definition
Thermocline definition
Zone of rapid temperature decrease
Number of main ocean vertical zones
Number of main ocean vertical zones
Five zones
Sunlight zone (Epipelagic) depth range
Sunlight zone (Epipelagic) depth range
Surface to 200 metres
Alternative name for sunlight zone
Alternative name for sunlight zone
Euphotic zone
Twilight zone (Mesopelagic) depth range
Twilight zone (Mesopelagic) depth range
200 to 1,000 metres
Midnight zone (Bathypelagic) depth range
Midnight zone (Bathypelagic) depth range
1,000 to 4,000 metres
Midnight zone temperature
Midnight zone temperature
2 to 4 degrees Celsius
Abyss (Abyssopelagic) depth range
Abyss (Abyssopelagic) depth range
4,000 to 6,000+ metres
Mariana Trench depth
Mariana Trench depth
Approximately 10,928 metres
Bioluminescence definition
Bioluminescence definition
Organisms emitting light through chemical reactions
How angler fish use bioluminescence
How angler fish use bioluminescence
To attract prey