Chapter 16 – Water: A Precious Resource of Class 7 Science NCERT Book (PDF) is available here for download in PDF format. Chapter 16 of Class 7 Science NCERT Books is one of the important chapters and also one of the interesting chapters. Students are advised to learn this chapter and prepare for Class 7 Science exams.
A snapshot from the chapter:
Important concepts of the chapter:
Important points of the chapter:
Water is essential for all living beings. There can be no life without it.
Water exists in 3 forms: solid, liquid and vapor.
Though water is maintained by the water cycle, yet there is an acute scarcity of water in many parts of the globe.
There is an uneven distribution of water. Much of it has resulted from human activities.
The rapid growth of industries, increasing population, growing irrigation requirements and mismanagement are some of the causes for water shortage.
We need to be worried about the wastage during the supply of water through pipes, the leaking taps in buildings and other places.
Unnecessary use of water and overdrawing from groundwater should be avoided. Recharge of water to the ground should be increased.
The need of the hour is that every individual uses water economically.
Plants wilt and ultimately dry up if they are not watered for a few days.