Evaporation requires heat energy.

During evaporation, the liquid particles at the surface get heated and start vibrating at a greater amplitude. These particles move into a gaseous phase as the bond between them and the rest of the liquid breaks.

This reduces the average energy possessed by the liquid and thus causes a cooling effect.

  1. Class 9
  2. Chapter 1 Class 9 - Matter In Our Surroundings

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.