What causes the North Atlantic Currant to move like a conveyor belt?

Question

I looked online and didn't understand it. I need to know what causes it to move, I just know there's a cold salty currant, and a warm shallow currant. Are they clashing? I just don't get it. How does cold salty water sink to the bottom of the ocean? And then move south?

Answer 1

The cold West Greenland current feeds the Labrador current, and combined they move south along the east coast of Canada.  At bit south of Newfoundland they do 'clash' with the current from the south going northwards, called the Gulfstream.  The result is often thick fog and cold breezes.  It's at this point that icebergs seriously begin to break up and melt.

As with air currents where warm air usually rises over colder air, the warmer Gulfstream overrides the Labrador current, due to the difference in temperature.  Both are routed eastwards towards Europe where they separate again in the Atlantic current, with the warm water directed south again and the cold water going north.  If you look at a map you can see that most currents work in a somewhat circular motion.

Answer 2

All currents are cause by the postion of the moon

Answer 3

the Eath is spinning and i forgot how fast

Answer 4

Freezing and evaporation and cooling cause water to get denser (weigh more) and sink.  

Sunshine (heating) and pressure from elsewhere causes water to rise.  

In addition, coriolis forces cause water to move from side to side (east and west) as it moves north and south.  

Wind can cause movement of waters at the surface.