Year 7 Science - Sound

Edit Answers
123456789101112131415161718
Across
  1. 4. The part in a microphone that vibrates
  2. 5. A solid liquid or gas sound needs to travel through
  3. 8. Unit to measure loudness of a sound
  4. 9. Moving vibrations through a medium with high and low pressure areas
  5. 10. Converts mechanical vibrations to impulses
  6. 12. How loud or soft the sound is
  7. 13. Converts soundwaves to electrical current
  8. 14. Moving backward and forwards
  9. 17. The size of the vibration
Down
  1. 1. All substances are made from...
  2. 2. Number of vibrations each second measured in Hertz
  3. 3. 1st part of the ear that vibrates
  4. 6. How high or low the sound is
  5. 7. The unit used to measure frequency
  6. 11. We can use certain materials to ________ some of the energy transferred by sound
  7. 15. Electrical signals that travel along the auditory nerve
  8. 16. 20Hz to 20 000 Hz (differs in other species)
  9. 18. Higher frequencies than we can hear (20 000Hz +)