Which of the following best describes the Freeze Separation Method for desalination?
A) A current is run through positive and negative electrodes in freshwater separated by semipermeable membranes from seawater.
B) Large icebergs are brought to coastal waters off countries that need freshwater where they are melted.
C) Saltwater is boiled and the water vapor is passed through a cooling condenser, where it condenses as freshwater.
D) Seawater is frozen and thawed multiple times, with the salts washed from the ice between each thawing.
E) Water on the salty side of a semipermeable membrane is pushed under high pressure through the membrane to the freshwater side.
Question 2
Which of the following was used during early exploration of the oceans to collect sediment samples?
A) Dredge
B) Gravity corer
C) Long line
D) Rotary corer
E) Seiche disk
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Delta Method Solution
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