Marine Biology 8th Edition By Castro -Test Bank

Student: ___________________________________________________________________________

1. Hydrogen bonds in water molecules are formed between A. Hydrogen atoms of adjacent molecules
   B. Oxygen atoms of adjacent molecules
   C. Hydrogen and oxygen atoms of adjacent molecules D. Two hydrogen atoms of the same moleculeE. Two oxygen atoms of the same molecule
2. When water cools, the molecules move ______________ and take up ______________ space. A. Faster, lessB. Slower, more C. Faster, more D. Slower, less E. Up, less
3. Which of the following are not elements? A. Sodium chloride
   B. Nitrogen
   C. HydrogenD. Oxygen
   E. Magnesium
4. A temperature of 4°C indicates: A. Boiling point of water
   B. Maximum density of water C. Freezing point of waterD. Sublimation point of water E. Condensation point of water
5. Hydrogen bonds:
   A. Lower the heat capacity of water
   B. Cause ice to melt at a lower temperature
   C. Make ice less dense than water
   D. Lower the boiling point of water
   E. Do not affect the heat capacity of water at all
6. Which ions comprise about 85% of the solutes in seawater? A. Magnesium and sulfate
   B. Sodium and chloride
   C. Calcium and carbonateD. Potassium and chloride E. Calcium and sulfate
7. The salinity of water is generally expressed in: A. Percentage per thousand liters of water
   B. Total weight per pound
   C. Percentage per literD. Parts per thousand
   E. Percentage per thousand

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8. The rule of constant proportions expresses that:
   A. Salinity varies with geographical location
   B. The percentage of sodium varies with depth
   C. The percentage of chlorine varies with geographical location D. Salinity varies depending on the seasonE. The relative concentration of ions does not change
9. Salinity of seawater increases:
   A. With an increase in rain
   B. Near the mouth of rivers
   C. Around ice as it melts in spring D. With a decrease in depthE. As evaporation increases
10. The heat capacity of water is ______________ compared with other naturally occurring substances. A. HighB. Low
    C. Equal
    D. Fluctuates by location E. None of the above