Sound Important questions | Grade VIII

 Important questions for Sound | Grade VIII

  1. What is sound ?
  2. How is sound produced ?
  3. What are source of sound ?
  4. What is vibration?
  5. Define propagation of sound ?
  6. What happens when we catch the ringing bell ?
  7. Write the nature of propagation of sound in solid , liquid and gas medium .
  8. Write the speed of sound in air , water and steel .
  9. What is reflection of sound ?
  10. Write the types of reflection of sound .
  11. What is an echo ?
  12. Write the uses of echo .
  13. What is reverberation ?
  14. Write the uses of reverberation .
  15. Write any two condition for echo and reverberation .
  16. Experimentally prove that medium is necessary for the transmission of sound .

    Give reasons .

  17. Sound is called mechanical wave. Why ?
  18. Microphone is necessary for conversation is space .Why ?
  19. We hear the sound of thunder after the flash of lightening .Why ?
  20. Echo is not hear in small room .Why ?
  21. Sound is not transmit in vacuum .Why ?

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