Surface currents move water vertically which thoroughly mixes the ...

[audragclark]

Surface currents move water vertically which thoroughly mixes the uppermost 400 meters of the
  ocean's surface. Indicate whether the statement is true or false.

Question 2

If the gradual rise of deep water at temperate and tropical zones were to stop, the thermocline would
  rise, making the difference in water layers steeper Indicate whether the statement is true or false.

[amandalm]

Answer to Question 1

ANS: F
Surface currents flow horizontally. They are driven by wind friction. They are able to mix the
uppermost 400 meters of the ocean's surface. Information can be found in the section Surface Currents
Are Driven by the Winds

Answer to Question 2

ANS: F
The thermocline would sink if the deep water did not rise in the temperate and tropical zones. This
would make the layering in the water less steep. The thermocline maintains its position by the
continual slow upward movement of water. Information can be found in the section Thermohaline
Circulation Affects All the Ocean's Water

[audragclark]

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