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The hydrosphere (water movement (insolation powers the hydrological cycle…

- - - - warm currents transport water towards the poles where cold currents take cold water towards the tropics
      - surface winds cause a frictional drag on large water surfaces so currents tend to follow wind direction
      - Ocean currents make sure tropics don't over heat at polar latitudes don't become cold
      - The Coriolis force means that currents are deflected right in the northern hemisphere and the left in the southern hemisphere
      - Gyres are circular shaped loops of water
      - in the northern hemisphere they move clockwise and opposite in the south
  - - - its caused by Thermohaline current
      - salt water is dense and sinks to the bottom while warm water stays on the surface
      - the conveyor belt starts in Noway where warm water heats the atmosphere
      - as warm water is transferred north the cooler water moves south for more warm water
      - this cold water flows south to the equator down to to the antarctic
      - eventually cold water returns to the surface and continuous the conveyor belt