This chapter explains how water is the essence of life, found as ice, liquid, and vapour, but only a small part is freshwater fit to drink. The water cycle—evaporation, condensation, and rainfall—replenishes rivers, lakes, and underground sources. Essential for people, plants, animals, farming, and industry, water is becoming scarce due to wastage, pollution, and overuse. Conserving it through rainwater harvesting, tree planting, and careful use is vital, as without water, life cannot exist.
Key Points
Water exists in three forms: Solid (ice), Liquid (water), Gas (water vapour).
Sources of water: Rain, rivers, lakes, ponds, wells, handpumps, seas, and oceans.
Freshwater vs Saltwater: Only a small part of Earth’s water is fresh and fit for drinking; most is salty.
Water cycle: Evaporation → Condensation → Precipitation (rainfall).
Groundwater: Rainwater seeps into soil and fills underground reservoirs (wells, handpumps).
Importance of water: Drinking, cooking, cleaning, farming, industry, and supporting plants & animals.
Water scarcity: Wastage, pollution, deforestation, and overuse reduce availability of safe water.
Conservation: Rainwater harvesting, planting trees, avoiding wastage, recycling water.
Without water, life cannot exist on Earth.
👉 👉Water is precious and limited. We must use it wisely, conserve it, and keep it clean to protect life on Earth.