Water on the earth
Water on the earth: Overview
This topic discusses the amount of water present on earth. We will learn that around three-fourth of the earth’s surface is covered with water. It highlights the stages of making water fit for drinking. It also briefs on droughts and floods.
Important Questions on Water on the earth
During drought, drinking water is scarce and it is very difficult to get food and fodder.
We can obtain clean and safe drinking water by boiling.
One day Devi was going to her friend's house to play. On the way, she saw some children wasting water at a bore pump. What might have Devi told them? What would you do if you were there?
What should be done to stop wastage of water?
How is water being wasted in your surroundings? How can you help?
What are the problems faced during flood?
Underground water is drawn out with _____.
How is ground water affected by the cultivation of paddy?
Drinking cooled boiled water help to maintain hygiene.
Which of the two-well water will you use for drinking? Why?
Water that is fit for drinking is called _____ water.
What precautions will you take to see that drinking water kept at public places is not contaminated?
It is good for health to drink water from a river or a pond directly.
Choose the right word from the box:
| purified, boiled, stagnant, precious, pure. |
Water that is free from germs and impurities is called _____ water.
The safer source of drinking water is:
Have you seen water flowing unnecessarily in your home, school or any other place? Where?
