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The swift, warm Atlantic current that flows from the Gulf of Mexico, around Florida, and up the east coast of North America
Warm surface currents
Originate near the equator
Release heat into the atmosphere as they flow away from the equator
Heat transfer influences climate
Brings deep, cold water up to the ocean surface
Contains lots of nutrients and organisms
Good for fishing
Form when seawater becomes more dense (heavier) than the surrounding water
Gravity causes denser water to sink beneath less dense water
What causes water to become more dense?
Increase in salinity (salt content)
Decrease in temperature of water
Deep Ocean Currents
Driven by density differences in water
As seawater freezes and turns to ice, the salt is left behind in the water
As water becomes salitier, it becomes more dense
The dense water sinks to the bottom of the ocean and moves toward the equator
Density of water is determined by these two things
Lower temperature = higher density
Higher salinity = higher density
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