Experts have designed these Class 5 EVS Notes and Chapter 1 Water The Essence of Life Class 5 Notes for effective learning.
Class 5 EVS Chapter 1 Notes Water The Essence of Life
Class 5 Water The Essence of Life Notes – Water The Essence of Life Class 5 Notes
→ Freshwater: Water that is not salty and is safe for drinking, farming and daily use.
→ Water cycle: The continuous movement of water through the air, land and sky as vapour, rain, and back again.
→ Groundwater: Rainwater that soaks into the soil and collects deep underground.
→ Aquatic organism: Organisms living in or around water, like fish, frogs or water plants.
→ Johad: A small earthen dam used in Rajasthan to store rainwater and recharge the ground.
→ It was a rainy day. Afreen joined Jyoti, who was watching tiny raindrops slide down the glass. Afreen asked Jyoti about the water-where it comes from and where it goes? This led them to explore the journey of water.
Water is found all around us, but not all of it can be used. Although most of the Earth’s surface is covered with water, a large part of it is salty and found in the oceans. Only a small amount is freshwater. Freshwater is used for drinking, farming, bathing and other daily activities.
→ Freshwater is found in rivers, lakes, ponds, glaciers, rain and underground sources. These are called sunface water. People in different parts of India use traditional ways to collect and store rainwater. For example, in Rajasthan, people build johads – small earthen dams to store rainwater and recharge the groundwater.
→ Water exists in three forms: liquid (like rain or rivers), solid (like ice or snow) and gas (like water vapour or steam). It can easily change from one form to another. Ice melts to form water, water boils to become steam and steam can cool to become water again. These changes are a part of the water cycle.
→ The heat from the Sun turns water from rivers, lakes and oceans into vapour. This vapour rises into the sky and forms clouds. When the clouds cool, the vapour changes into droplets and falls as rain, snow or hail. The rainwater then flows into rivers, lakes and oceans and some of it seeps into the ground. This repeated process is called the water cycle.
→ When rain falls, some water is absorbed by soil and becomes groundwater. We get this water through wells, borewells and handpumps. But in cities, cemented surfaces stop water from soaking into the ground, so groundwater does not refill properly.
→ Many plants and animals live in water. Plants have waxy leaves to protect them from damage. Animals have fins, floating leaves or long roots that helps them to survive in water.