Need and Conservation of Water

Science Four

Fill in the blanks with suitable word

Question: 1. Earth is also called __________ planet.

Answer: Blue

Question: 2. About ___________ of earth surface is covered with water.

Answer: three fourth.

Question: 3. The main sources of fresh water are _________, ________ , and ________.

Answer: rivers, lakes, glaciers.

Question: 4. Wise utilization of water to save it is called ____________.

Answer: water conservation.

Question: 5. Industrialisation is also one of the cause of _____________ of water.

Answer: scarcity.

Question: 6. With the increase in population, the demand for water is _____.

Answer: increased.

Question: 7. We should _______ the water taps after use.

Answer: close.

Question: 8. Farmers should use ___________ for irrigation to prevent wastage of water.

Answer – sprinklers

Question: 9. Dams can check the ________and help to preserve water.

Answer: flood.

Question: 10. Dirt and stagnant water are also a cause of ____________.

Answer: diseases.

Question: 11. Filters are used to ________ water.

Answer: purify.

Question: 12. Water should always be stored in clean and covered ___________ .

Answer: container.

Question: 13. Water is fit for drinking is called ____________ water.

Answer: potable.

Question: 14. ____________ removes dust from water.

Answer: filtration.

Question: 15. We should not drink water without filtration because it contains ______ and ______.

Answer: Dust and germs.

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