(ii) Have the dead leaves and the solid dirts passed through the lter bed?
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(iii) Write a sentence to describe the water collected in the container.
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(iv) Is the water in the container safe for drinking? Explain why.
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The water is now clear but not safe for drinking. It still contains germs (microbes).
How do we make water safe for drinking?
To make it safe for drinking, a gas called chlorine is added to the water.
Chlorine kills the germs found in the water and puries it.
This process is called purication.
Find out
Apart from adding chlorine, how else we can make water safe for drinking?
Water obtained directly from reservoirs is not safe for drinking.
The water is ltered to remove soil, leaves and other solid dirts found in it.
This process is called ltration.
After ltration, chlorine is added to make the water safe for drinking.
This process is called purication.
What I have learnt
Find out
What may happen to us if we drink river water?
Why must we boil tap water before drinking, especially after a cyclone or a heavy rainfall?
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