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Water as a Resource

ICSE · Class 3 · Science

Complete topic list for Water as a Resource in ICSE Class 3 Science. Key concepts, sub-topics, and what to focus on for board exams.

52 questions30 flashcards5 concepts

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4 Topics · ICSE Class 3 Science

Topics in Water as a Resource

1

1. Change of State of Water

  • Water can change from one form to another: solid (ice), liquid (water), and gas (water vapour).
  • Evaporation happens when water turns into vapour due to heat from the Sun.
  • Condensation happens when water vapour turns back into water due to cooling.
2

2. The Water Cycle

  • The water cycle is the continuous movement of water between the Earth and the atmosphere.
  • Steps: Evaporation → Condensation → Cloud formation → Rain or snow → Collection in rivers, lakes, oceans.
  • The Sun is the main driver of the water cycle.
3

3. Impurities in Water

  • Water from rivers, lakes, and ponds has impurities and is not safe to drink directly.
  • Impurities can be soluble (dissolve in water) or insoluble (do not dissolve).
  • Soluble impurities include salts of sodium, calcium, magnesium, and iron.
4

4. Purification of Water

  • Water must be purified before drinking to remove dirt and kill germs.
  • Common methods: Boiling, Chlorination, and Water Purifiers.
  • Boiling kills germs by heating water for 5–10 minutes.

Key Concepts

Central concept: Water as a Resource

Change of StateWater CycleImpurities in WaterPurification of WaterRainwater Harvesting

Frequently Asked Questions

What are the important topics in Water as a Resource for ICSE Class 3 Science?
Water as a Resource covers several key topics that are frequently asked in ICSE Class 3 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Water as a Resource — ICSE Class 3 Science?
Understand the core concepts first, then work through the 52 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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