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20 Cards in this Set
- Front
- Back
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most subsurface water samples are taken...
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in an NIO sampling bottle.
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we can determine salinity if we know...
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the chlorinity of a water sample.
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the ions present in seawater alter the characteristics of pure water in all of the following ways except:
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the ions cause cells placed in seawater to burst.
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the amount of gas that seawater can hold in solution will be greater...
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in colder water.
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a molecule is a group of _____ held together by chemical bonds.
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atoms.
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the average salinity of the world ocean is closest to which of the following:
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34 parts per thousand.
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the hydrogen atoms in a water molecule tend to bond to
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oxygen atoms of another water molecule.
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other than the hydrogen and oxygen atoms themselves, the two most abundant elements (ions) dissolved in seawater are
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sodium and chloride.
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a solution is made of two components, a(n) ____ & a(n)_____.
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solute...solvent.
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which of the following statements about pH is not true?
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as a whole, the pH of the ocean is mildly acidic.
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the term "salinity" refers to
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the total amount of dissolved solids in the ocean.
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the hydrogen and oxygen atoms in a water molecule are held together by:
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electron sharing.
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the major source of carbon dioxide in seawater is
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from the respiration of marine animals and other organisms.
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once an element or dissolved substance reaches the ocean,
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it may sty or be removed depending on the individual chemistry of the element.
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which of the following statements best describes the conservative constituents of seawater?
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conservative constituents, which include salinity, change very slowly.
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oxygen enters seawater mainly
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as a byproduct of photosynthesis.
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the salinity of the ocean, at the present time, seems to be
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in equilibrium, with dissolved components entering equal to dissolved components leaving.
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the property of seawater used in induction salinometers to measure salinity is
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electrical conductivity.
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the principle of constant proportions states:
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that the ratio of major salts in samples of seawater from various places is a constant.
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residence time is
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the average length of time an element spends in the ocean.
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