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Category: Marine Aquaristics

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  • Category: Marine Aquaristics

    We can estimate salinity with a hydrometer because of
    a. water pressure
    b. Archimedes' principle
    c. Pascal's law
    d. atmospheric pressure


    All questions and answers are from The Marine Aquarists' Quiz Book by Martin and Barbara Moe.
    Lynne

  • #2
    I’m guessing b

    Comment


    • #3
      Im going with B

      Comment


      • #4
        Going with C to be different ...

        Comment


        • #5
          Next letter is D
          Ken Higgins
          120 gallon reef
          125 gallon fresh water
          50 gallon fresh water

          Comment


          • #6
            B....sure you choose the right answer lol

            Comment


            • #7
              B. Is my guess.
              Sheleen
              90 gal.. new soft corals and fish
              26 gal bow front

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              • #8
                No one picked A. So I'm going out on a limb. I pick A.

                Comment


                • #9
                  Answer: B

                  Eureka! Which is what Archimedes hollered in the bathtub when he realized that his body immersed in a fluid is buoyed up by force equal to the weight of the displaced fluid. A hydrometer float is pushed upward by a force equal to the weight of the volume of water it displaces and since salt water weighs more than freshwater the float floats higher in salt water. A calibrated scale provides specific gravity reading. The concept of specific gravity is based on Archimedes’ principle
                  Lynne

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