Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which criticism applies to the phrase that warm air holds more water?

  • A.The phrase is entirely accurate
  • B.The capacity depends on the pressure of the air rather than on its temperature, which the phrase omits
  • C.Saturation vapour pressure depends on temperature alone, not on the air
  • D.Warm air in fact holds less water than cold air because the molecules are moving too rapidly to be retained

Answer: C

Saturation vapour pressure is a property of water at a given temperature and would be the same in a vacuum as in air, so the air is not holding anything. The correct statement is that the equilibrium vapour pressure over a water surface rises with temperature. The phrase gives the right answer for the wrong reason, which matters as soon as one tries to reason about situations it does not cover. The shared properties explain why these belong to one family, and the differences explain why more than one exists.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.