The NCERT Class 7 Science chapter "Water: A Precious Resource" highlights the importance of water as an essential natural resource for all living organisms. The chapter explains the growing problem of water scarcity across the world and emphasizes the need for water conservation. Students learn about the availability of freshwater on Earth, the unequal distribution of water resources, and why only a very small fraction of Earth's water is suitable for human use. The chapter also introduces the significance of World Water Day and encourages responsible use of water.
The chapter discusses the water cycle and explains how water continuously moves through evaporation, condensation, precipitation, and infiltration. Students learn about the three forms of water—solid, liquid, and gaseous—and how groundwater serves as an important source of freshwater. Concepts such as water table, aquifers, groundwater recharge, and infiltration are explained in detail. The chapter further examines the causes of depletion of the water table, including increasing population, industrial growth, agricultural activities, deforestation, and inadequate rainfall.
The chapter concludes by focusing on water management and conservation practices such as rainwater harvesting, revival of traditional water storage systems, and efficient irrigation methods like drip irrigation. It also explains the harmful effects of water scarcity on plants and the environment. Through case studies and practical examples, students understand how communities can conserve water resources and ensure sustainable use for future generations. The chapter encourages every individual to adopt water-wise habits and actively participate in protecting this precious resource.
G7
Science
Environment
Water
Thinking Skills
Life Skills
Research Skill
Critical Thinking