Sound
Q.1. Name different musical instruments.
Q.2. Describe sound.
Q.3. What is the sound?
Q.4. How is sound produced?
Q.5. What is the relation of amplitude to sound?
Q.6. How is sound produced in humans?
Q.7. How does frequency of sound depend on vocal cords?
Q.8. How do birds produce sound?
Q.9. Name the three families of musical instruments?
Q.10. Describe stringed instruments. Give its examples.
Q.11. Describe wind instruments. Give its examples.
Q.12. Describe percussion instruments. Give its examples.
Q.13. Describe ghana vadya. Give its examples.
Q.14. Why does sound need a medium for propagation?
Q.15. How will you show that sound travels in water?
Q.16. How will you show that sound travels through solids?
Q.17. How will you show that sound needs medium for propagation?
Q.18. Describe the structure of the ear.
Q.19. How do our ears function?
Q.20. What is vibration?
Q.21. Who discovered the simple pendulum and in which year?
Q.22. Describe a simple pendulum.
Q.23. What is oscillation?
Q.24. What is the time period?
Q.25. What is amplitude?
Q.26. What is frequency?
Q.27. What is loudness and how is it related to amplitude?
Q.28. What is pitch and how is it related to frequency?
Q.29. What is the range of frequency of audible sound to humans?
Q.30. What is ultrasonic sound?
Q.31. What is subsonic sound?
Q.32. Which animal can hear sounds of frequencies higher than 20,000 Hz?
Q.33. What is a musical sound?
Q.34. What is a noise?
Q.35. What is noise pollution? Name some sources of noise pollution.
Q.36. What are the harms of noise pollution?
Q.37. How can noise pollution be controlled or minimized?
Q.38. What is hearing impairment?
Q.39. What is the full form of ASL?
