1. What percentage of the Earth's surface is covered with water?
2. Which form of water is available in the largest quantity on Earth?
3. Which of the following is a source of freshwater?
4. What is the main source of groundwater?
5. The process of water seeping into the ground is called:
6. Water found below the water table is called:
7. Which one of the following helps to recharge groundwater?
8. Which human activity reduces the seepage of rainwater into the ground?
9. Which of the following is NOT a method of water conservation?
10. Which irrigation technique is most water-efficient?
11. What is the term for the level below which the ground is saturated with water?
12. An aquifer is:
13. Which of these is a major reason for the depletion of the water table?
14. In which season is the water table usually highest?
15. Which of the following is a traditional method of water storage?
16. Which of these activities uses the most water?
17. Why is groundwater overused in agriculture?
18. Which of these helps prevent water pollution?
19. What does 'scarcity of water' mean?
20. What is the main cause of water scarcity?
21. Which of these is a benefit of rainwater harvesting?
22. Boiling water is a method of:
23. Which of the following is a non-renewable source of water?
24. Which state in India faces acute water shortage?
25. Which of the following practices leads to water conservation?
26. Which of the following should be avoided to save water?
27. Which layer of Earth stores groundwater?
28. The falling of water droplets from clouds is called:
29. Which one is a domestic use of water?
30. Which structure is commonly used in villages to store rainwater?
31. Which gas is dissolved in water to support aquatic life?
32. What do we call the artificial collection of water for future use?
33. Which method prevents wastage of water in agriculture?
34. The upper limit of underground water is called:
35. Which term refers to the removal of salt from seawater?
36. Which of these is a natural water reservoir?
37. Which body is primarily responsible for water conservation in India?
38. Which of these causes water pollution?
39. Which is a key message of the lesson 'Water: A Precious Resource'?