What is upwelling?
Hydrosphere Oceans Review

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Upwelling is the process where deep, cold, nutrient-rich water rises to the surface, often due to wind patterns, supporting marine life.
2.
FLASHCARD QUESTION
Front
What factors create ocean currents?
Back
Ocean currents are created by factors such as wind, the Earth's rotation, salinity differences, and temperature variations.
3.
FLASHCARD QUESTION
Front
Why are oceans important to human life?
Back
Oceans support biodiversity, regulate climate, store carbon, and provide resources like food and transportation.
4.
FLASHCARD QUESTION
Front
Where do the greatest number of ocean organisms live?
Back
The greatest number of organisms live close to the surface of the ocean, where there is ample sunlight and food.
5.
FLASHCARD QUESTION
Front
What are the three most important dissolved gases in the ocean?
Back
The three most important dissolved gases in the ocean are nitrogen, carbon dioxide, and oxygen.
6.
FLASHCARD QUESTION
Front
What is the role of salinity in ocean currents?
Back
Salinity affects water density, which influences the movement of ocean currents.
7.
FLASHCARD QUESTION
Front
What is downwelling?
Back
Downwelling is the process where surface water sinks, often occurring in areas where water is cooled or where there is high salinity.
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