Water as a Resource — Chapter Summary
ICSE · Class 3 · Science
Summary of Water as a Resource for ICSE Class 3 Science. Key concepts: When water is heated by, When water vapour in the air and The water cycle is.
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Overview
Water is one of the most important resources on Earth. All living things—plants, animals, and humans—need water to survive. This chapter teaches us how water moves around the Earth in a cycle, how it changes from liquid to vapour and back again, and why it's important to keep water clean and save it
Key Concepts
When water is heated by
When water is heated by the Sun, it turns into water vapour and rises into the air. This process is called evaporation. For example, water from ponds
When water vapour in the air
When water vapour in the air cools down, it turns back into tiny water droplets. This process is called condensation. These droplets come together to
The water cycle is the continuous
The water cycle is the continuous movement of water between the Earth and the atmosphere through evaporation, condensation, and rainfall.
Water from rivers
Water from rivers, lakes, and ponds contains impurities like sand, dirt, minerals, and germs. These can be soluble (dissolve in water) or insoluble (d
Cleaning dirty water to make it
Cleaning dirty water to make it safe to drink is called purification. Common methods include boiling, chlorination, and using water purifiers.
Learning Objectives
- Understand the importance of water for all living things
- Learn about evaporation and condensation
- Explain the water cycle
- Identify impurities in water
- Describe methods of water purification
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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