Page 156 - Volt Elevate The World Around Us Book 4

13 Water

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About the Chapter

The chapter teaches us about the importance of water in our daily life. All living beings – plants,
animals and humans need water to survive. We learn about different sources of water such as
rain, rivers, ponds, lakes, wells and oceans. The chapter also explains how we should practise
safe handling of water to keep it clean and free from germs. Another key part is saving water
where methods like rainwater harvesting are introduced to prevent wastage. The chapter also
highlights the serious issue of water pollution caused by human activities and its harmful effects
on life. Additionally, we study materials around us and their common properties such as weight,
mass and density, and understand why some objects float on water while others sink.

Learn with Paras and Mrinmay

Yes, that’s called
rainwater harvesting.
It really helps us save
water. If more people used
it, we would never
face any shortage of
water.

Mrinmay, did you
know rainwater can be
collected and stored to
use later?

Mindful Moments

Now answer the following questions.
y What method allows us to store rainwater for later use?

y Why is saving water important for everyone?

Apply

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