Air Density and Water Vapor Quiz
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Questions and Answers

Assuming constant pressure, temperature, and volume, what happens to the density of air as the quantity of water vapor decreases?

  • It decreases
  • It remains constant
  • It fluctuates
  • It increases (correct)

    • Why is air with a greater amount of water vapor less dense than air with a lesser amount of water vapor?

  • Dry air molecules are less massive than water vapor molecules
  • Water vapor molecules have more mass than dry air molecules
  • Water vapor does not affect air density
  • Water vapor molecules have less mass than dry air molecules (correct)

    • What happens to the density of an air parcel when the quantity of water vapor increases?

  • It decreases (correct)
  • It remains constant
  • It increases
  • It fluctuates

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