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1. Sound is produced due to

2. The sensation of hearing is produced in our ears due to

3. Which activity shows that vibrating objects produce sound?

4. The sound of the human voice is produced due to vibration of

5. The matter through which sound is transmitted is called

6. Sound cannot travel through

7. When a vibrating object moves forward, it creates a region of

8. A region of low pressure in a sound wave is called

9. In propagation of sound, particles of the medium

10. Sound waves are also known as

11. The region of high pressure in a sound wave is called

12. Propagation of sound can be visualised as propagation of

13. The disturbance in a medium that moves from one point to another is called

14. In longitudinal waves, the particles of the medium move

15. The slinky experiment demonstrates that sound waves are

16. In a slinky, the regions where the coils are closer are called

17. The regions in a slinky where coils are farther apart are called

18. The motion of particles in a transverse wave is

19. When we drop a pebble in a pond, the ripples are an example of

20. Why are sound waves called longitudinal waves?