1. Aavi initially thinks the disappearing water has been:

2. Where else is water disappearance mentioned?

3. Activity 8.2 investigates water disappearance using a:

4. What is the conclusion from Activity 8.2?

5. The process of water turning into vapour is called:

6. What example is given for evaporation?

7. What happens when water is sprinkled on a hot pan?

8. Steam is actually:

9. In Activity 8.3, what is added to a glass tumbler of cold water?

10. What appears on the outer surface of the glass tumbler after a few minutes?