Question:

Earth space science help....?

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List the reasons for variations in salinity in the various oceans.

and..

match

Calcium

Sulfate

Sodium

Chloride (Chlorine)

Magnesium

-A) Which of the major dissolved salts makes up 7.7% of these salts

B) Which of the major dissolved salts makes up 55.0% of these salts?

C)Which of the major dissolved salts makes up 1.16% of these salts?

D) Which of the major dissolved salts makes up 3.7% of these salts?

E) Which of the major dissolved salts makes up 30.6% of these salts?

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2 ANSWERS


  1. you have Sodium and Chloride listed separately?  two elements,

    but Sodium Chloride is in-itself a "Salt" in a "Saline" solution


  2. Weather patterns, sea currents like the Gulf Stream and run-off of river sediments explain most variations.

    Rainfall dilutes the salts in the water and evaporation increases the salinity. These effects often vary with season. In the polar region the salts are diluted by melting ice. Rivers deposit sediments in the seas, which are leeched off by the currents. Finally sea currents tend to mix it all.

    Salts are dissolved in water and appear as ions. The two most important ions are chloride and sodium ions, together accounting for 30 grams out of the 35 grams of dissolved salts. See here: http://en.wikipedia.org/wiki/Image:Sea_s...

    So B is chloride, E is sodium and A is sulfate.

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