The Cooling Power of Evaporation Quiz
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Questions and Answers

Why do we describe evaporation as a cooling effect?

  • High kinetic energy molecules absorb heat from the surroundings
  • Evaporation causes a phase change in the liquid
  • Low kinetic energy molecules increase the temperature of the liquid
  • High kinetic energy molecules leaving the surface reduce temperature (correct)
  • What is the main reason behind the cooling effect of evaporation?

  • The liquid becoming denser
  • High kinetic energy molecules leaving the surface (correct)
  • The liquid releasing heat
  • Low kinetic energy molecules entering the surface
  • What happens to the temperature when high kinetic energy molecules evaporate from the surface of a liquid?

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