We see green coloured plastic grass at many places these days. Space around natural grass feels cooler than space around the plastic grass. Can you find out why?
Natural grass feels cooler than plastic grass because natural grass releases water through a process called transpiration.
This water evaporates from the grass surface, and evaporation causes a cooling effect. The chapter explains that when water evaporates, it imparts a cooling effect.
Plastic grass does not release any water and therefore does not have any evaporation happening, so no cooling effect is produced around it.
Explanation
The chapter discusses the cooling effect of evaporation on pages 14-15. It explains that water seeps through the surface of an earthen pot and evaporates, which imparts a cooling effect. Similarly, natural grass releases water vapor through transpiration, and this evaporation cools the surrounding air. Plastic grass cannot release water or allow evaporation, so it does not produce any cooling effect.
Solution Steps
Natural grass releases water through the process of transpiration.
The evaporation of this water causes a cooling effect.
Plastic grass does not release water or allow evaporation.
Consequently, plastic grass does not produce a cooling effect.