Vertical Structure of the Oceans (Leaving Cert Geography): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
Which properties create the ocean's vertical structure?
Which properties create the ocean's vertical structure?
Density, pressure, salinity, temperature
What role does thermohaline circulation play in the ocean?
What role does thermohaline circulation play in the ocean?
Redistributes heat and nutrients
What is the thermocline?
What is the thermocline?
A zone of rapid temperature decrease
What is the maximum depth of the sunlight zone?
What is the maximum depth of the sunlight zone?
200 metres
What is the sunlight zone also called?
What is the sunlight zone also called?
Euphotic zone
What depth range does the twilight zone cover?
What depth range does the twilight zone cover?
200 to 1,000 metres
What is the temperature in the midnight zone?
What is the temperature in the midnight zone?
2 to 4 degrees Celsius
What pressure level is reached in the midnight zone?
What pressure level is reached in the midnight zone?
Up to 400 times atmospheric pressure
At what depth does the abyss zone begin?
At what depth does the abyss zone begin?
Around 4,000 metres
How deep is the Mariana Trench?
How deep is the Mariana Trench?
Approximately 10,928 metres
How do angler fish use bioluminescence?
How do angler fish use bioluminescence?
To attract their prey
What % of organisms below 500m can produce light?
What % of organisms below 500m can produce light?
Up to 90%