Class 3 Evs - ICSE-SCIENCE
Water as a Resource
In this chapter, Class 3 ICSE students explore water as one of our most precious natural resources. Young learners discover the main sources of water on Earth, primarily rain, rivers, lakes, and oceans. The chapter emphasizes why all living things—plants, animals, and humans—need water to survive. Students learn about the various daily uses of water at home and school. Crucially, the chapter introduces simple, practical ways to save water and keep our water sources clean. Understanding these concepts is essential for ICSE Science exams, as questions frequently test everyday applications and conservation habits.
Start Learning FreeKey Concepts
Sources of Water
Rain is the main natural source of water on Earth. Rainwater fills up rivers, lakes, ponds, and underground streams.
Uses of Water
Humans, animals, and plants all need water to live. We use water every day for drinking, cooking, bathing, washing, and watering plants.
Potable Water
Water that is clean and safe for us to drink is called potable or drinking water. We must always boil or filter water to kill germs before drinking it.
Water Conservation
Saving water by not wasting it is called water conservation. Simple habits like turning off the tap while brushing teeth help save water.
Rainwater Harvesting
Collecting and storing rainwater for later use instead of letting it run off wastefully is known as rainwater harvesting.
Important Formulas
Board Exam Info
In ICSE Science assessments, this chapter typically carries about 5 to 8 marks. Common question types include fill-in-the-blanks, matching sources with their uses, true or false statements, and short answer questions explaining ways to save water.
Frequently Asked Questions
What is the main source of water on Earth?
Rain is the primary natural source of water on Earth, which fills our rivers, lakes, and oceans.
Why should we not drink water straight from a river?
River water can contain dirt, germs, and harmful bacteria that can make us sick. We must boil or filter it first.
How can I save water at home?
You can save water by turning off the tap while brushing your teeth, taking shorter showers, and fixing leaking taps.
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